One of the defining elements of the 2012 presidential campaign is money. Not that the candidates themselves have raised all that much; except for President Obama, they haven't. But two dozen wealthy Americans have put in at least $1 million each.
Mostly, they're a mix of Wall Street financiers and entrepreneurs. One of the biggest donors is Sheldon Adelson, a casino magnate who is worth about $25 billion.
Is the battle for the GOP presidential nomination about history? Or is it about math? Santorum may be getting big headlines with his primary wins, but it's Romney who is advancing further to the magic 1,144 number. And more defeats mean more pressure on Gingrich to pull out. Plus: a tribute to the late Peter Bergman of Firesign Theater. NPR's Ron Elving and Ken Rudin have the latest in this week's political roundup.