Tue February 28, 2012 NPR Story  Mitt Romney Wins Arizona,
Michigan Race Tight  As predicted, Mitt Romney has won the
Arizona primary.  From the New York Times:  Mitt Romney has won
the Republican presidential primary in Arizona, based on
preliminary exit polling, but is locked in a tight battle with
Rick Santorum in Michigan, a crucial electoral battleground
where Mr. Romney's home-town advantage has all-but evaporated.
Mr. Romney's victory in Arizona will earn him 29 delegates,
extending the lead he already enjoys over his rivals. The win
comes after his rivals largely conceded that the former
Massachusetts governor would win the border state.   The race is
Michigan, also as predicted, is neck and neck.