A president gets embroiled in a national scandal when sexual hi-jinx from the past threaten to sabotage his best-laid plans. Only in The Contender, Jeff Bridges’ president is like a Boy Scout and Joan Allen, his choice for V.P., is the politician in trouble. Bridges makes a handsome commander-in-chief. Maybe too handsome. On celluloid, the leader of the free world is usually the guy who lacks sex appeal and charisma. Hollywood likes its presidents craggy-faced and tough (Harrison Ford in Air Force One, Morgan Freeman in Deep Impact), with bonus points for a receding hairline (Jack Nicholson in Mars Attacks)....