(snip) The latest matchup: Republican National Committee Chairman Michael Steele vs. Mitt Romney, the former Massachusetts governor and a likely frontrunner for the 2012 Republican presidential nomination. Steele cast doubt on Romney's conservative credentials Friday and said the Republican base rejected Romney because "it had issues with Mormonism" and was unsure of Romney's commitment to opposing to abortion rights. Romney's camp took issue with the suggestions that the most reliable Republican voters are intolerant and fired back Tuesday, with spokesman Eric Fehrnstrom saying, "Sometimes when you shoot from the hip, you miss the target." Sen. John McCain, Romney's former rival...