
The Republican Party in the United States has long been associated with Christianity, particularly white evangelicals, who currently make up around 25% of the country's population. While Christians are relatively evenly split between the two major parties, the GOP has seen a rise in support from white evangelical voters over the past few decades, with 85% identifying with or leaning towards the GOP. This shift has been attributed to various factors, including anti-communist zeal, opposition to civil rights, and concerns about the influence of Catholics and Jews, who tended to align with the Democratic Party. Abortion also emerged as a pivotal issue, with evangelicals increasingly opposing it in the 1970s, even though they initially considered it a Catholic issue. The election of Ronald Reagan in 1980 further solidified the alignment between Republicans and evangelicals, with Reagan actively courting evangelical voters. Today, the Republican Party continues to enjoy strong support from white evangelicals, while also attracting a significant number of Catholic voters.
| Characteristics | Values |
|---|---|
| Republicans who are religiously unaffiliated | 27% |
| Religiously unaffiliated voters who identify as Democrats | 70% |
| White evangelical voters who identify with or lean towards the GOP | 85% |
| White evangelical voters who align with the Democrats | 14% |
| Catholic voters who identify as Republicans or lean towards the Republican Party | 50% |
| Catholic voters who identify as Democrats or lean Democratic | 44% |
| Catholic voters who attend services monthly or more often and identify as Republicans or lean Republican | 61% |
| Catholic voters who attend services less often and identify as Republicans or lean Republican | 47% |
| White evangelicals as a percentage of the American population | 25% |
| Republicans who identify as Protestants | 56% |
| Democrats who identify as Protestants | 38% |
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What You'll Learn
- Catholics and Protestants are almost evenly split between Republicans and Democrats
- Republicans are more likely to be Protestant, while Democrats are more likely to be unaffiliated
- Catholics who attend services regularly are more likely to be Republican
- White evangelicals are a core Republican constituency
- Abortion is a key issue for evangelicals, though it was initially considered a Catholic issue

Catholics and Protestants are almost evenly split between Republicans and Democrats
In the United States, Christians make up a majority of both political parties and are relatively evenly split politically. According to a 2014 survey, 40% of Christians identified or leaned Democratic, while 44% identified or leaned Republican. African American Christians have been among the most solid supporters of the Democratic Party, while Catholics and Protestants are divided.
In recent years, the Republican Party has made gains among White nonevangelical and White Catholic voters. About half of Catholic voters identify as Republicans or lean toward the Republican Party, compared with 44% who identify as Democrats or lean Democratic. Among Catholic voters who attend services monthly or more, 61% identify as Republicans or lean Republican, while among less frequent attenders, 47% align with the GOP.
The political leanings of Catholics and Protestants have shifted over time. In the 1960s, many evangelicals were zealously anticommunist and opposed to civil rights, which led them to gravitate away from the Democrats. They were also concerned about the growing political and social power of Catholics and Jews, who tended to be more affiliated with the Democratic Party.
The election of Ronald Reagan in 1980 was a turning point for evangelicals politically, and the formation of the Moral Majority in 1979 by Baptist minister Jerry Falwell further mobilized evangelicals to vote for socially conservative candidates. Despite these shifts, many White Evangelicals have remained politically inactive, and some evangelical leaders have been reluctant to openly support political candidates.
While partisanship remains strongly linked to religious affiliation, other factors such as gender, age, income, and race are also important predictors of political leanings.
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Republicans are more likely to be Protestant, while Democrats are more likely to be unaffiliated
In the United States, the religious affiliation of voters has been found to correlate with their political party identification. While Christians make up a majority of both the Republican and Democratic parties, partisanship remains strongly linked to voters' religious affiliation.
Republicans are more likely to be Protestant. From 2021 to 2023, 56% of surveyed Republicans identified as Protestants, compared to 38% of Democrats. However, it is worth noting that Protestants are not a monolithic group, and there are different levels of engagement with political parties depending on the specific denomination. For example, Black Protestants who regularly attend religious services are no more likely to associate with the Republican Party than those who attend less frequently. On the other hand, among Catholic voters, those who attend services monthly or more often are more likely to identify as Republicans or lean Republican (61%) compared to those who attend less frequently (47%).
The Republican Party has long had a core constituency of white evangelicals, who currently make up about 25% of the American population. White evangelical voters have increasingly moved toward the Republican Party, with 85% identifying with or leaning toward the GOP, while only 14% align with the Democrats. This shift can be attributed to various factors, including their zealous anticommunist views and opposition to civil rights during the 1960s, as well as their concerns about the growing influence of Catholics and Jews within the Democratic Party. The election of Ronald Reagan in 1980 was a pivotal moment for evangelicals politically, and the formation of the Moral Majority by Baptist minister Jerry Falwell in 1979 played a significant role in mobilizing evangelicals to support Reagan.
On the other hand, Democrats are more likely to be unaffiliated with any religious group. From 2021 to 2023, 26% of Democrats reported having no religious identity, compared to 11% of Republicans. This trend has been growing over the past few decades, with "religious nones" becoming more Democratic. Currently, 70% of religiously unaffiliated voters align with the Democratic Party, while only 27% identify as Republicans or lean Republican.
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Catholics who attend services regularly are more likely to be Republican
While Christians in the United States make up the majority of both political parties, there are notable differences in the religious affiliations of Republican Party supporters. According to a 2023 survey, Republicans are more likely to be Protestant, with 56% identifying as such, compared to 38% of Democrats.
Among Catholic voters, there is a near-even split, with around half identifying as Republicans or leaning towards the Republican Party. However, there is a significant difference when it comes to attendance at religious services. Catholic voters who attend services monthly or more often are more likely to identify as Republicans, with 61% doing so, compared to 47% of those who attend less frequently. This pattern is observed across most denominations, suggesting that regular attendance at religious services is associated with a higher likelihood of Republican affiliation.
Historically, the Republican Party has had a core constituency of white evangelicals, who currently make up about 25% of the American population. In the past few decades, there has been a shift, with white evangelical Protestant voters increasingly moving towards the Republican Party. This shift can be attributed to various factors, including their zealously anticommunist views and their opposition to civil rights during the 1960s, which clashed with the Democratic Party's stance. The election of Ronald Reagan in 1980 was a pivotal moment, as he actively courted evangelical voters and formed strong ties with conservative religious leaders, resulting in a growing alignment between evangelicals and the Republican Party.
While Catholics were initially divided between the two major parties, with abortion being considered a "Catholic issue", the political landscape evolved. The election of Reagan and the formation of the Moral Majority in 1979 marked a turning point, as conservative evangelicals joined the anti-abortion movement in large numbers, blurring the lines between religious groups and political ideologies.
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White evangelicals are a core Republican constituency
There are several reasons why white evangelicals have become a core Republican constituency. Firstly, many evangelicals' views align with the Republican Party, particularly their zealously anti-communist stance and their opposition to civil rights. They were also concerned about the growing political and social power of Catholics and Jews, who tended to be more affiliated with the Democratic Party.
Another factor is the politicization of religion by Republican politicians such as Ronald Reagan, who courted evangelicals and made efforts to mobilize them to vote for socially conservative candidates. Reagan's election in 1980 was a watershed moment for evangelicals politically and saw the creation of the modern Christian right.
Abortion has also become a major issue for white evangelicals, who initially considered it a "Catholic issue" but by the 1970s and 1980s, they increasingly opposed it, while the Democratic Party became more in favor. This became a key factor in mobilizing evangelicals to support Republican candidates.
Additionally, higher GOP association is seen among regular attenders of religious services across most denominations, including Catholics. This may contribute to the strong link between partisanship and religious affiliation, with white evangelicals being a prominent example of this trend.
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Abortion is a key issue for evangelicals, though it was initially considered a Catholic issue
The abortion debate has been a significant issue in American politics, with religious groups, including Catholics and Evangelicals, holding varying views. While abortion is a key issue for Evangelicals, it was initially considered a Catholic issue.
Historically, Evangelicals did not actively engage with the abortion debate, viewing it as a Catholic concern. However, by the 1970s, their stance shifted, and they became increasingly opposed to abortion. This shift coincided with the election of Ronald Reagan in 1980, which marked a pivotal moment for Evangelicals and the formation of the modern Christian right. The politicization of religion by Reagan and influential evangelical figures like Jerry Falwell contributed to the evolving stance of Evangelicals on abortion.
Abortion has become a defining issue for Evangelicals, with 61% considering it "very important" in their voting decisions. White evangelical Protestants strongly oppose abortion, with 89% wanting to overturn Roe v. Wade and 77% believing abortion is morally wrong. Their confidence in religious leadership on this issue is also notable, with 59% expressing a lot of confidence in their clergy's advice.
In contrast, Catholics exhibit a broader range of views on abortion. While the Catholic Church has long opposed legal abortion, teaching that life is sacred from conception, individual Catholics hold diverse opinions. Most Catholics believe abortion should be illegal in some cases but legal in others, and their stance often depends on Mass attendance frequency. Catholics who attend Mass regularly are among the strongest opponents of legal abortion, with two-thirds believing abortion should be illegal in all or most cases. However, Catholics who attend Mass less frequently hold more liberal views, with 65% believing abortion should be legal in all or most cases.
The abortion debate has influenced the political leanings of both Catholics and Evangelicals. While half of Catholic voters lean towards the Republican Party, there is a notable divide, with 44% identifying as Democrats or holding Democratic leanings. White evangelical voters have increasingly shifted towards the Republican Party, with 85% identifying with or leaning towards the GOP. This shift can be partly attributed to the alignment of their anti-communist and civil rights views with Republican politics in the 1960s.
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Frequently asked questions
Republicans are more likely to be evangelical than Catholic. White evangelical Protestant voters have increasingly moved towards the Republican Party, with 85% of white evangelical voters identifying with or leaning towards the GOP.
Evangelicals' views often align more with Republicans. They were zealously anticommunist and were either very lukewarm supporters of civil rights or opposed them. They were also concerned about the growing political and social power of Catholics and Jews, who tended to be more affiliated with the Democratic Party.
Catholics are more likely to be Democrats, with 44% of Catholic voters identifying as Democrats or leaning towards the Democratic Party. However, over the past 15 years, the GOP has made gains among white Catholic voters.
Yes, members of the Church of Jesus Christ of Latter-day Saints, widely known as Mormons, remain overwhelmingly Republican.











































