1. After the first wave of Republican primaries, Senator Rand Paul -- who wasn't on the ballot -- emerged as the night's biggest winner, simply because the tea party darling he endorsed in the North Carolina primary, Greg Brannon, lost. We'll explain tonight with Stephanie Schriock, president of Emily's List, and Chris Kromm, executive director of the Institute for Southern Studies.
2. Benghazi fever is on the rise, and now Republicans are fund-raising off the issue. MSNBC contributor and host of Majority Report Sam Seder joins us.
3. All In America: We got an up-close look at the abortion wars through the eyes of people at one clinic in Buffalo, New York.
4. From the Koch brothers' involvement in a Columbus Zoo Levy to Sheldon Adelson's opposition to online gambling, we've got the latest on big money in politics, with Nick Confessore, who covers money in politics for The New York Times and Nevada political journalist Jon Ralston.