Mitt Romney's decisive victory in Arizona on Tuesday won him every one of that state's 29 delegates in what was a winner-take-all election. But it was quite a different story in Michigan.
Even though Rick Santorum finished 3 percentage points behind Romney, Santorum ended up with the same amount of delegates: 15. That's because Michigan awards most of its delegates according to congressional districts.
Every one of the 10 states voting next week on Super Tuesday will also award delegates on a proportional basis.
It's ALL THINGS CONSIDERED from NPR News. I'm Robert Siegel.
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And I'm Audie Cornish. Deadly tornadoes swept through the Midwest overnight and this morning, killing at least eight people. The storm system hammered parts of Nebraska, Kansas, Missouri, Illinois and Kentucky, where it still poses a threat.
As NPR's David Schaper reports, hardest hit is the small city of Harrisburg in southern Illinois.
A day after Senate Democrats' chances of keeping control of the chamber seemed to improve with the news that Maine Republican Olympia Snowe was retiring from a seat Democrats seem likely to gain, they got apparently more good news — Bob Kerrey finally decided to run for the soon-to-be-vacated U.S. Senate seat from Nebraska.
Federal Reserve Chairman Ben Bernanke acknowledged that the economy is improving on Wednesday, but he isn't convinced the recovery is self-sustaining. He reaffirmed the Fed's position that the economy will likely need super-low interest rates well into 2014.
Federal health officials have added new safety alerts to statins, a class of drugs used to lower cholesterol levels. The Food and Drug Administration cited rare side effects, including memory loss, diabetes and muscle pain. Robert Siegel talks to Rob Stein about the news.
On Wednesday evening, President Obama is expected to host a dinner at the White House honoring veterans of the Iraq War. Veterans still face challenges after their homecoming, including a higher-than-average unemployment rate.