Democratic presidential candidate Hillary Clinton challenged rival Barack Obama to a "bowl off." She said, "today I am challenging Senator Obama to a bowl-off. A bowling night right here in Pennsylvania. Winner take all. I’ll even spot him two frames. It’s time for his campaign to get out of the gutter and allow all of the pins to be counted. And I’m prepared to play this game all the way to the tenth frame." The challenge was a joking reference to Obama's poor performance when he spent an afternoon bowling in Altoona, Pennsylvania. He scored a 37 out of a possible 300.