Reality television star and former Olympic athlete Caitlyn Jenner filed the preliminary paperwork on Friday to formalize a gubernatorial run.

Jenner plans to run as a Republican to challenge incumbent Gov. Gavin Newsom, her campaign said Friday. The bid is backed by top GOP operatives, including Tony Fabrizio, a pollster for Donald Trump's 2016 and 2020 campaigns, and Steven Cheung, one of Trump's communications team members who helped spearhead a recall effort against former Gov. Arnold Schwarzenegger in 2003.