A critical day in the race for the Republican presidential nomination concluded with victories for former Massachusetts Gov. Mitt Romney in the Arizona and Michigan primaries. The victory in Michigan, Romney's native state, was particularly important for his campaign. A loss there would have renewed questions about the strength of his bid for the White House.
In both states, former Pennsylvania Sen. Rick Santorum placed second.
In Arizona, NPR's projected win for Romney adds 29 delegates to his total. How many of Michigan's 30 delegates he gets won't be known until results are in from each congressional district.
Former House Speaker Newt Gingrich and Rep. Ron Paul, R-Texas, who largely skipped campaigning in both states, gave early speeches to supporters.
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