1. Republican lobbyist David Jolly beat Democrat Alex Sink in Tuesday's Florida special election. It's a race that political analysts consider a bellweather for the 2014 midterm elections in November, and a trial-run for Republicans eager to use the midterms as a referendum on Obamacare. Join All In tonight for our take on what it all means with David Axelrod, a former Senior Advisor to President Barack Obama.
2. Once partners, now enemies: The conflict between the CIA and the Senate body charged with overseeing it is escalating. We're bringing you the latest on how it's a fight over torture -- not documents.
3. They mystery of Malaysia Airlines Flight 370 continues, with new satellite images released today by the Chinese government showing three shapes floating in the South China Sea on Sunday. Is it a lead, or another dead-end clue? Greg Feith, a former American Senior Air Safety Investigator with the National Transportation Safety Board, weighs in.
4. Plus: The "inner cities..." according to Rep. Paul Ryan. We're bringing you that story with Imani Perry, Professor at the Center for African American Studies at Princeton University, Sam Seder, host of "Majority Report" and co-host of "Ring of Fire," and Robert George, an editorial writer for the New York Post and a former staffer of Newt Gingrich.