ORANGE COVE, Calif. -- During the two decades that Victor Lopez has been mayor of this citrus growing town, one rule has remained unchanged: no dancing in taverns. But for the first time since taking office, the so-called mayor for life faces two serious challengers -- and one of them wants to boogie. "People want to have fun," said Republican challenger Manuel Ferreira, who runs recycling programs in the city. "If they get up and dance, they're not going to drink as much at the bar and they're going to work it off on the dance floor. I don't know...