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Photo: The Canadian Press. All rights reserved.

Sen. John Kerry D-Mass., speaks with actor Ben Affleck during a meeting with foreign relations members to discus the crisis in the Democratic Republic of Congo on Capitol Hill in Washington on Wednesday, Dec. 19, 2012. (AP Photo/Jose Luis Magana)

Ben Affleck is taking his name off the list of possible candidates for U.S. Sen. John Kerry's seat, which would be open if the Democratic senator from Massachusetts is confirmed as secretary of state.

Affleck says in a Monday posting on his Facebook page that while he loves the political process, he will not be running for public office.

Speculation about the Cambridge, Mass., native rose slightly when he did not completely rule out a Senate bid during an appearance on CBS' Face The Nation on Sunday.

In his Facebook posting, Affleck says he would continue working with the Eastern Congo Initiative, a non-profit organization that helps direct humanitarian aid to the war-torn region, and for other causes.

Affleck says Kerry would make a great secretary of state.