Roiling beneath the surface of the Trump mania in South Carolina is a battle between Ted Cruz and Marco Rubio over the future of the evangelical alliance with the Republican Party.

While Trump is drawing the support of about a third of white evangelicals here, the attraction is probably more about Trump's star power and pledges of greatness. Trump's dominance in the race is muddying developing fault lines within evangelical culture. These divides are prompting shifts in the way some evangelicals are choosing to engage in politics. A splinter group, mostly in the Rubio camp, is seeking to build a new kind of religious right with a less combative public face.

These schisms are likely to continue to play out in Republican politics, even if this cycle's peculiarities have temporarily obscured them.

South Carolina is notorious for splitting its significant evangelical vote in the Republican primary. In 2008, that split benefited the least evangelical candidate, John McCain. In 2012, when white evangelicals made up 65 percent of the Republican electorate, Newt Gingrich won the primary with 44 percent of the evangelical vote, and Mitt Romney and Rick Santorum were behind with an even split — 22 and 21 percent, respectively.

In the most recent South Carolina poll from Monmouth University ahead of Saturday's primary, Trump is leading the field in white evangelical support with 33 percent. Cruz (21 percent) and Rubio (18 percent) are splitting 39 percent of the white evangelical vote. Jeb Bush, Ben Carson, and John Kasich are evenly splitting the remaining 24 percent.

Both the Cruz and Rubio camps recognize the need to target white evangelical voters here and across the country. Although the religious right's obituary is frequently written and is just as frequently wrong, white evangelicals still make up about 50 percent of Republicans in South Carolina, and more than a third of Republicans nationwide. For the party, ceding the evangelical vote to Trump would mean failing to continue to build this key coalition — or, more aptly, reconciling the factions that have emerged.

What's more, as an overall share of South Carolinians, white evangelicals (26 percent) are losing ground to non-white Christians (29 percent), according to the Public Religion Research Institute, so it's important for white evangelicals to consolidate and build on what they've got. Although non-white Christians are a small segment of Republicans in the state (10 percent), both Rubio and the state's governor, Nikki Haley, who endorsed him on Wednesday, emphasized their backgrounds as the children of immigrants. Yet Rubio seemed to tiptoe around the politics of immigration, a sign of how Trump has made it red hot.

Cruz is old-school religious right; he presents himself as a savior figure who will "unleash the holy wrath of the United States" on "radical Islamic terrorists." By contrast, when endorsing Rubio, Haley used words like "grace," "compassion," and "humble."

The Cruz camp is heavily dominionist. He has amassed a lengthy roster of evangelical endorsers, who believe that conservative, "bible-believing" Christians need to take political power to trigger a religious revival the country needs.

Cruz's high-profile religious endorsers include prominent figures in the culture wars, such as Focus on the Family founder James Dobson. Dobson appears in a new campaign ad for Cruz, recorded after the death of Supreme Court Justice Antonin Scalia, vouching for the senator's willingness to nominate genuinely conservative justices. The South Carolina evangelical chairman for Cruz's campaign, Pastor Mike Gonzalez, calls the separation of church and state a "myth." Television and radio personality Glenn Beck, who campaigned here this week with Cruz, said on his radio program that with Scalia's death, God "woke the American people up" to the need for a "constitutionalist" like Cruz for president.

Rubio, on the other hand, is drawing support from evangelicals who say they don't want a "pastor-in-chief." While it's important to them that the president be a pious Christian opposed to abortion, same-sex marriage, and Planned Parenthood funding, they don't see politics as the means to religious redemption. They tend to use phrases like "human flourishing" when talking about domestic policy — referring to what they perceive to be the impact of lower taxes and less regulation on the economy.

Rubio relies less on evangelical endorsements and instead has created "advisory boards" on issues like "religious liberty" and "marriage and family." The campaign describes the Marriage and Family Advisory Board as comprised of people (mostly academics and think tank fellows) who "have devoted themselves to rebuilding a vibrant culture of marriage and family."

Cruz wants to keep fighting the culture wars like it's, well, 1999. For Rubio's evangelical supporters, Christian values are eternal, but it's time for new battle tactics.