REPORT: Mitt Romney won both of Tuesday's Republican presidential primaries, routing Rick Santorum in Arizona and narrowly securing Michigan, his birth state.
The victories will provide an important boost for Romney, a former Massachusetts governor who has sought to cast himself as the GOP's inevitable nominee. He has now won primary contests in six states: New Hampshire, Florida, Nevada, Maine, Michigan and Arizona.
"We didn't win by a lot, but we won by enough. And that's all that counts," Romney told supporters in the Detroit suburb of Novi on Tuesday night.
He said nothing about Santorum in his speech, instead criticizing President Obama at length and trying to boil down a complicated economic message.
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