Serena Williams' Bikini Bod on Election Day

Serena Williams has a phenomenal athletic physique fit for tennis or whatever the hell else she wants to do when she's in a bikini on a beach ... including some boxing.

The greatest female tennis player of our era tuned out the racket of election day, and instead spent Tuesday in the Bahamas -- where her smokin' hot bod was on display and in full motion with some friends.