BOCA RATON, Fla. – Joe Biden may just be the perfect pitchman for the senior vote.

Seeing Medicare as a window to gain support, President Barack Obama’s campaign dispatched the vice president to two sprawling Florida retirement communities Friday, hoping a white-haired 69-year-old running mate will be able to stir enthusiasm among seniors in Democrat-rich South Florida and tip the scales for the state’s 29 electoral votes.

“It makes sense,” said Charles Zeldon, a Nova Southeastern University expert on politics and voting. “He is one of them.”