Donald Trump may be unpopular with a majority of California Republicans, but the presidential hopeful is poised to dominate the California primary over GOP rivals Ted Cruz and John Kasich, according to an ABC7-Southern California News Group poll released Monday.

The survey also showed Hillary Clinton with a double-digit lead over Bernie Sanders for the Democratic presidential nomination, and it revealed there is very little chance for Republicans to capture the seat being vacated by Sen. Barbara Boxer as two Democrats appear set to move forward to the general election after the June 7 primary.

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Despite the survey’s findings that reveal Trump is viewed negatively by 51 percent of California Republicans, he is the preferred candidate by 54 percent of likely GOP voters. Cruz is favored by 20 percent of likely voters and Kasich trails with 16 percent.

The real drama for the California primary will be if Trump can secure the party nomination by collecting enough of the state’s 172 delegates to reach the 1,237 needed to avoid a contested convention in Cleveland this summer. Currently, Trump leads Cruz 996 to 565 in delegates.

“I think there is a resignation among California Republicans that Trump is the likely nominee,” said USC political analyst Sherry Bebitch Jeffe. “I felt that up at the (California Republican Party) convention in Burlingame this weekend. None of the three candidates generated much enthusiasm.”

The poll results may also place extra pressure on Cruz to perform well in Tuesday’s Indiana primary, where recent surveys show his support flagging in the face of Trump’s momentum. The GOP frontrunner has continued to generate momentum after winning a slate of primaries over the last two weeks including in New York, Delaware, Pennsylvania, Rhode Island and Connecticut.

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His appearances at a large rally in Costa Mesa and the Republican state party convention outside of San Francisco also bolstered his claims to be the “presumptive nominee.”

Sanders appears to have lost traction since Clinton took four out of five primaries in the Northeast on April 26, and his campaign laid off hundreds of workers in the wake of those defeats. The Vermont senator recently opened two official state offices in Los Angeles and Oakland, but his 19-point deficit to Clinton in California is the largest he’s faced since polling has been done in California this year.

Just last month, Sanders had narrowed Clinton’s lead to 6 points in a California Field Poll. He also trails Clinton in pledged delegates 1,645 to 1,318. With Clinton’s unbound superdelegates, she stands at 2,165 delegates – just 217 shy of the total needed to win the Democratic presidential nomination. California has 475 delegates to dole out on the Democratic side on June 7.

Bebitch Jeffe said Sanders’ end game may mirror what his original intent was for getting into the race in the first place.

“I believe he got into the race to influence the Democratic Party agenda and to have strong input into the ideology and policy direction of the party,” she said. “But then he began to look like he was a real candidate and he was being treated like a real candidate and he raised money like a real candidate. But now it may well be being realized that it’s a very difficult road for him to win and so he’s staying in the race to have an impact on the party agenda.”

The state’s top-two primary system also appears to keep California blue in the U.S. Senate, with three Republicans splitting the vote enough to allow U.S. Rep. Loretta Sanchez and California Attorney General Kamala Harris to fight it out in November.

Harris holds the largest lead in the wide field of candidates with 32 percent of the vote while Sanchez sits at 18 percent. Republicans Tom Del Beccaro, Ron Unz and Duf Sundheim combined got 25 percent of the vote – with Beccaro the GOP leader at 10 percent.

The poll also found likely voters preferred Clinton to Trump 56 percent to 34 percent in a general election matchup. She also would beat Cruz by 28 points and Kasich by 19 points.

Commissioned by SurveyUSA for SCNG/ABC7, the poll was conducted between April 27-30 and, of 2,011 registered voters, 529 were determined to be likely voters in the Republican primary and 826 Democrats and unaffiliated voters were likely to vote in the Democratic primary.