Jennifer Garner says Ben Affleck may run for office 'one day'

There was speculation in December of last year that Affleck would run for Senate in Massachusetts, to replace Secretary of State John KerryJohn KerryCountries create largest marine reserve off Antarctica The Atlantic Council's questionable relationship with Gabon’s leader State Dept. months late on explaining Clinton aide's missing emails MORE. Affleck, a Boston native, and Kerry are close. The actor campaigned for Kerry's presidential campaign in 2004.

But Affleck opted not to run and has seen his Hollywood career flourish: His film "Argo" won the Academy Award for Best Picture earlier this year.

Affleck has remained politically active through his Eastern Congo Initiative and he's testified on Capitol Hill about ending the war in the Congo. He also held a fundraiser for Massachusetts Democrat Elizabeth WarrenElizabeth WarrenEmbattled GOP senator fires back at Warren Brent Budowsky: An epic battle for the future of Congress President Obama’s antitrust enforcement MORE's 2012 Senate campaign.

Garner said she would support her husband if he makes the political leap.

"I'm along for the ride," she told the magazine.