Trump endorses Republican Steven Hilton for California governor, reordering wide-open race

"With Federal help, and a Great Governor, like Steve Hilton, California can be better than ever before!" Trump added.

The endorsement — coming about a month before mail ballots go to voters in advance of the June 2 primary — will help Hilton coalesce conservative support in a race with no clear leader. However, Trump is widely unpopular in heavily Democratic California outside his conservative base and Trump's backing would become a liability if Hilton faces a Democrat in the November election.

With a large field, Democrats have been fearful that a quirk in the state's unusual "top two" primary system could allow only two Republicans to reach the November general election ballot — Hilton and GOP rival Chad Bianco, the Riverside County sheriff. Trump's decision — a strong signal to undecided conservative voters — will make that outcome less likely by helping Hilton lure additional support.

Democratic consultant Paul Mitchell called Trump's decision "the safe bet" for Republicans. Rather than cling to a long shot hope that both Republicans reach the November ballot — or risk that both Hilton and Bianco fall short — Trump's blessing should consolidate support behind Hilton and allow him to emerge from a large primary field and reach November.

"Having a Republican on the top of the ticket is essential" to drive turnout in critical down-ballot races, with control of the U.S. House in play," Mitchell added. In an unpredictable, wide-open race, the smart play for the GOP is to "get one Republican on the ballot."

There are more than 50 candidates on the ballot — including eight established Democrats and along with Hilton and Bianco, the two leading Republicans. An all-GOP general election is possible in California, which puts all candidates on one primary ballot and only the top two vote-getters advance to November, regardless of party.

Polling in early February by the nonpartisan Public Policy Institute of California found the field had broken into two distinct groups, with Bianco, Hilton and three Democrats — U.S. Rep. Eric Swalwell, former Rep. Katie Porter and billionaire climate activist Tom Steyer — in close competition, with other candidates trailing.

In a statement, Hilton thanked Trump for his support and promised to grow jobs and bring down the state's punishing cost of living. "Together we can turn things around," Hilton said.

Republicans have not won a statewide election in California in two decades. Registered Democratic voters outnumber Republicans in the state by nearly 2-to-1.