Updated

Reality television star Caitlyn Jenner announced plans Friday to run for governor of California.

"I’m in! California is worth fighting for," Jenner tweeted.

Jenner, a Republican, also filed paperwork to seek the governorship and has hired several well-known Republican operatives to guide her burgeoning campaign.

She's hoping to unseat Democratic Gov. Gavin Newsom, who faces an all-but-certain recall election later this year.

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Jenner, the Olympic gold medal winning decathlete turned transgender rights activist and nationally known TV personality, had been mulling a bid. Word of the decision was first reported by Axios and confirmed by Fox News.

Jenner has put together a team of prominent Republican operatives to advise the campaign, including 2016 and 2020 Trump presidential campaign pollster Tony Fabrizio and Steven Cheung, a Trump White House and reelection campaign aide who worked on Arnold Schwarzenegger's successful 2003 gubernatorial recall election victory.

Along with her announcement, Jenner launched a website. In a statement on the website, she took aim at the Democrats' one-party lock on the deep blue state for the past decade.

Jenner launched a campaign website that said "I'm in!" (Screenshot)

"California has been my home for nearly 50 years. I came here because I knew that anyone, regardless of their background or station in life, could turn their dreams into reality," Jenner wrote. "But for the past decade, we have seen the glimmer of the Golden State reduced by one-party rule that places politics over progress and special interests over people. Sacramento needs an honest leader with a clear vision."

And she touted that she's "a proven winner and the only outsider who can put an end to Gavin Newsom's disastrous time as governor."

But, defeating Newsom won't be easy.

Fifty-six percent of Golden State adults questioned in a Public Policy Institute of California survey released late last month said if the recall election were held right now, they’d vote to keep Newsom in office, with four in 10 saying they’d vote to oust the governor from office.

In an email to his campaign donor list, the governor wrote "we're going to need help keeping up with Caitlyn's personal wealth and ability to raise money from right-wing donors now that she has Trump's team with her."

And Newsom adviser Nathan Click told Fox News that "we always knew the Republican recall would be a ludicrous circus full of Trump-supporters."

Republicans see the recall election as their best chance to topple a politician who's never lost an election during his years as San Francisco mayor, California lieutenant governor and now governor – and their first chance to win a statewide contest since the 2006 gubernatorial reelection victory by Schwarzenegger, who was a moderate Republican.

The recall push was launched last June over charges the governor mishandled the state's response to the coronavirus pandemic. The effort was fueled by the state's COVID restrictions on businesses and houses of worship, school shutdowns and even opposition to the state’s high taxes. But the effort surged in the autumn after Newsom's dinner at a uber-exclusive restaurant, which – at best – skirted rules imposed by the governor to prevent the spread of the coronavirus

Recall organizers touted that they collected more than 2 million voter signatures– far more than the 1.5 million valid signatures needed to get a recall election on the ballot later this year. The petition signatures were turned over last month to the registrars in California's 58 counties. Those counties now have until April 29 to verify the signatures. The election would likely be held sometime in November.

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If the Newsom recall qualifies for the ballot, as expected, voters would be asked two questions — first, whether the governor should be removed from office. If more than 50% support removing Newsom, the second question would be a list of candidates running to replace the governor.

Other well-known Republicans already have announced their candidacy. Among them: Businessman John Cox, the 2018 GOP gubernatorial nominee who lost to Newsom by nearly 25 points; former San Diego Mayor Kevin Faulconer; and former Rep. Doug Ose have launched campaigns.

Fox News' Alex Pappas contributed to this report.