Midterm elections are all about turning out base constituencies. Over the last few decades, there have been few more reliable voters for Republicans than white evangelical Protestants. This year, however, GOP candidates may be getting less help from this group—not because white evangelical Protestants are becoming less supportive or less motivated, but simply because they are declining as a proportion of the population, even in Southern states.
White evangelical Protestants have remained a steadfast Republican constituency in both presidential and midterm congressional elections ever since the Reagan presidency, which marked what political scientists Merle and Earl Black dubbed “the great white switch.” In 2008 and 2012, roughly three-quarters of white born-again Christians supported GOP nominees John McCain (73 percent) and Mitt Romney (78 percent). In the 2010 midterm election, similar numbers of white born-again Christians (77 percent) supported the GOP House candidate in their districts.
During the heady days of evangelical prominence in the 1980s and 1990s, white evangelical Protestant leaders frequently noted the decline of their more liberal mainline Protestant cousins, but now white evangelicals are seeing their own populations shrink. In recent years, for example, the Southern Baptist Convention, the largest evangelical denomination in the country, has reported steady declines in membership and new baptisms. Since 2007, the number of white evangelical Protestants nationwide has slipped from 22 percent in 2007 to 18 percent today.
A look at generational differences demonstrates that this is only the beginnings of a major shift away from a robust white evangelical presence and influence in the country. While white evangelical Protestants constitute roughly three in 10 (29 percent) seniors (age 65 and older), they account for only one in 10 (10 percent) members of the Millennial generation (age 18-29). In the last few national elections, however, because of high levels of voter turnout, white evangelical Protestants have managed to maintain an outsized presence at the ballot box according to national exit polls, representing roughly one-quarter of voters.
But the fact that there are currently five Southern states—Arkansas, Georgia, Kentucky, Louisiana, and North Carolina— where polling shows that the Senate race margins are less than five percentage points indicates that 2014 may be the year that the underlying demographic trends finally exert enough force to make themselves felt. These changes are evident in analysis based on the American Values Atlas, a massive interactive online map of demographic and religious diversity in America based on 45,000 interviews conducted throughout 2013, created by the Public Religion Research Institute in partnership with Social Science Research Solutions.
Differences marked with an asterisk are not statistically significant at the 90 percent level of confidence. (PRRI/SSRS, American Values Atlas, 2013; Pew Research Center, Religious Landscape Survey, 2007)
Compared to 2007, just after the 2006 midterm elections, the five southern states where there are tight Senate races have one thing in common: the proportion of white evangelical Protestants has dropped significantly.
In Arkansas, where Republican and freshman Representative Tom Cotton is locked in a tight race with two-term Democratic Senator Mark Pryor, the white evangelical Protestant proportion of the population has dropped from 43 percent to 36 percent.
In Georgia, where Democratic candidate Michelle Nunn is battling Republican candidate David Perdue for retiring Senator Saxby Chambliss’s seat, white evangelical Protestants made up 30 percent of the population in 2007 but that number is currently down to 24 percent.
The proportion of white evangelicals in Kentucky has plunged 11 points, from 43 percent to 32 percent; here Senate Minority Leader Mitch McConnell faces the Democratic Alison Grimes, the secretary of state.
In Louisiana, where Republican Representative Bill Cassidy is up against three-term Democrat Mary Landrieu, white evangelicals have slipped from being 24 percent of the population to 19 percent.
Likewise, North Carolina has seen a dip in the white evangelical proportion of its population, from 37 percent to 30 percent; here incumbent Democrat Kay Hagan battles Republican Speaker of the North Carolina House Thom Tillis.
Arkansas and Georgia have also witnessed significant declines in the numbers of white mainline Protestants, who also lean toward supporting Republican candidates in the South.
Two forces account for the declining proportions of white evangelical and mainline Protestants: the growth of non-black ethnic minorities and, perhaps surprisingly, the growth of the religiously unaffiliated across the South. Notably, each of these growing constituencies leans decidedly toward Democratic candidates. For example, in 2007, the religiously unaffiliated constituted 12 percent each of the populations of Kentucky and North Carolina. By 2013, the percentage of unaffiliated Kentuckians had jumped nine points to 21 percent, and the percentage of unaffiliated North Carolinians had jumped to 17 percent. While increases in the proportions of the religiously unaffiliated in Arkansas, Georgia, and Louisiana fall short of statistical significance, the patterns all point in the same direction.
So what does this mean for the 2014 elections? Certainly, events on the ground are still paramount; the campaign machines and peculiarities of candidates matter. And in low-turnout elections such as the midterms, the real weight of these demographic and religious shifts will not yet be fully felt at the ballot box. White evangelical Protestants have a strong turnout record, while non-black ethnic minorities and particularly the religiously unaffiliated are much less likely to vote. PRRI’s pre-election American Values Survey found that while two-thirds (65 percent) of white evangelical Protestants report that they were absolutely certain to vote in the November elections, less than half (45 percent) of the religiously unaffiliated report this kind of certainty. But the underlying trends indicate that at least one reason why there are a number of close elections across the South is the declining dominance of white evangelical Protestants, the most stalwart of GOP supporters.
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