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TALLAHASSEE, Fla. - Now that Republicans have made him the U.S. Senate front-runner, Marco Rubio is trying to weather potentially damaging revelations about his credit card use, double billing for airfare and murky finances.
A few months ago, the former Florida House speaker seemed unlikely to beat Gov. Charlie Crist in the party's Senate primary. And in those months, Rubio's lavish spending has come under scrutiny of federal investigators.
Yet his poll numbers have soared, carrying him well ahead of Crist and forcing the once seemingly unbeatable governor to consider running as an independent for Senate. Crist has until Friday to...