(Reuters) - New Jersey Governor Chris Christie defended his praise for President Barack Obama after superstorm Sandy, but said he would stick with his fellow Republicans and vote for Mitt Romney in Tuesday's election. "I endorsed Mitt Romney 13 months ago because I thought he was the best guy for the job," Christie said on Sunday during a news conference, reaffirming his support for the Republican candidate. But support for Romney does not mean that he cannot appreciate the "good job" that Obama did while responding to the historical storm that hit the U.S. Northeast last week, Christie said. Sandy...