Republican front-runner Donald Trump has grown his level of support in California, yet GOP voters in the state remain so at odds over his candidacy a quarter of them insist they would never vote for him in a general election.

A new USC Dornside/Los Angeles Times poll now finds Trump receiving 37 percent of the Republican primary vote, a significant uptick from where he stood the last time the poll was taken back in September.

The bombastic New York City real estate mogul is followed by Texas Senator Ted Cruz at 30 percent and Ohio Governor John Kasich at 12 percent.

A Quarter of GOP Voters vow not to Support Trump in November

Still, a staggering 25 percent of all GOP voters insist they would not vote for Trump in November and nearly one in three of Cruz's supporters echo that sentiment.

Meanwhile, Trump supporters widely view Cruz in the same dim light, with roughly half of them insisting they have an unfavorable impression of him.

The poll finds all the acrimony could spell trouble for Republicans when voters go to the polls on June 7, and could lead to resounding defeats for the GOP up and down the state's ticket.

Among California voters who view immigration as in a "crisis," Trump leads 48 percent to 29 percent, with just 8 percent for Kasich. For voters less concerned about the issue, Trump's level of support dipped all the way to just 27 percent.

Trump Supporter Believe Immigration at 'Crisis' Levels

Overall, roughly 60 percent of Trump supporters agreed that illegal immigration was either a crisis or at least a major problem, with just over half of them agreeing with him that all those in the country illegally should be immediately deported. Among all Republicans, only a third back mass deportations.

As for Trump's "Make America Great Again" mantra, 2 in every 5 voters who think the country's best years are behind it identify as Trump supporters, compared to 26 percent for Cruz. Among those sharing a more optimistic view of the nation, the two are deadlocked at 36 percent.

One in 5 Republicans also insisted they would vote for Democratic front-runner Hillary Clinton over Trump in a general election matchup.

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