WASHINGTON (AP) -- With one debate left, President Barack Obama and challenger Mitt Romney are retreating from the campaign trail to bone up on foreign policy.
They're leaving the work of courting voters to their running mates.
Monday's debate in Boca Raton, Fla., with its focus on international affairs, is the third and final between the two rivals and comes just 15 days before the election.
Obama left Friday for Camp David, the presidential hideaway in Maryland's Catoctin Mountains. He was to remain there with advisers until Monday morning. Romney was to spend the weekend in Florida with aides preparing the debate.
Romney running mate Paul Ryan planned a campaign stop in Pennsylvania on Saturday. Vice President Joe Biden was headed for St. Augustine, Fla.
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