Donald Trump. REUTERS/Rick Wilking They like and are planning to vote for Sen. Ted Cruz (R-Texas). But most Republicans surveyed in a new focus group in South Carolina, the next state to vote in the GOP primary race, saw a Trump victory in the state as "inevitable."

The focus group, conducted by Bloomberg Politics and the firm Purple Strategies, gave evidence of some of Trump's potential weaknesses in Southern states. The nominating contest will shift heavily there in the coming weeks, with South Carolina voting February 20 and many of the so-called SEC primary states voting March 1.

The voters in the focus group shared concerns about Trump's religiosity and his supposed crassness.

None of the 10 voters who participated believed Trump to be a religious person. Most raised their hands when Bloomberg's Mark Halperin asked whether they were troubled by that.

Halperin then played clips in which Trump used or mimicked profanity in numerous stump speeches. One woman buried her face in her hands.

"It's crass," she said. "It's not how you want your president to present" himself, she said.

Trump was not pleased that Halperin showed the group one example in which he mouthed the profanity:

Still, while all but one voter picked Cruz over Trump for their personal votes, the vast majority expected Trump to come out on top in next week's South Carolina primary.

"One thing that Trump does is he has a very passionate crowd of people that follow him," one woman said. "And I think that the thing that's going against the other candidates is, they're tired of the same old, same old. And he is that person."

Trump won Tuesday night's New Hampshire primary, grabbing about 35% of the Republican vote. Cruz came in third behind Ohio Gov. John Kasich (R), a week after Cruz triumphed over Trump for first in the Iowa caucuses.

A Real Clear Politics average of recent South Carolina polls found Trump with a more than 16-point lead over Cruz there.