Mitt Romney is running for two jobs, and he can’t hold both at once.

Last month, Romney announced he was campaigning for the U.S. Senate in Utah. He’s also running for re-election to Marriott International Inc.’s board of directors, according to a filing Friday. The catch is that Senate ethics rules bar members from serving as an officer or board member of any publicly held company.

M.J. Henshaw, a representative for the Romney campaign, declined to comment. A spokeswoman for Marriott declined to comment.

Romney, the 2012 Republican presidential nominee and a former Massachusetts governor, probably doesn’t plan on losing either election — he’s been juggling public service and corporate directorship for 15 years. He first served as a Marriott director from 1993 to 2002, leaving after being elected governor. He served again from 2009 to 2011, ran for president, then rejoined the hotel company’s board in 2012.