LOS ANGELES -- The mayor of Los Angeles easily won re-election after a bumpy first term in the nation's second-largest city, fueling speculation that he will be among contenders next year to succeed Gov. Arnold Schwarzenegger. Mayor Antonio Villaraigosa, the first Hispanic mayor in more than a century, was rewarded Tuesday with a second, four-year trip to City Hall despite an uneven first term that saw the breakup of his marriage and the defeat of his signature plan to reform city schools.