MIAMI Senator John Kerry is in Florida today, helping a Democratic hopeful in the district where the Republican Senator abruptly resigned. Representative Mark Foley was considered a shoo-in for re-election -- until it was revealed he had exchanged raunchy E-mails with a teenage page. Senator Kerry is headlining a fundraiser for Tim Mahoney, who may now have a better shot at winning. Kerry says the weekend is not about Foley's resignation. He says the people in Florida will make their own decision about that. Instead, Kerry says, the visit is about mustering support for state Democrats. Nationwide, the party needs...