Tuesdays without primaries feel strange. But there was plenty going on, including these final items:

* At College Guide, Daniel Luzer discusses a new Demos study showing long term trend of public disinvestment in public universities, with students and their parents taking up the slack, most through debt.

* Dean Baker, Jared Bernstein, and Paul Krugman all tear Robert Samuelson a new one over latest “entitement reform” op-ed.

* Despite Santorum’s withdrawal, Ron Paul not going anywhere right away.

* George Zimmerman’s lawyers announce they’ve withdrawn from his case, say he’s talking to Sean Hannity.

* Matt Yglesias compares vast size of mortgage interest deduction to low-income housing subsidies.

And in non-political news:

* Sales of Madonna’s new album plunge 88% in a week.

Have to write column tonight summing up greater meaning of Santorum campaign. Wish me luck!

Selah.

Ed Kilgore

Ed Kilgore is a political columnist for New York and managing editor at the Democratic Strategist website. He was a contributing writer at the Washington Monthly from January 2012 until November 2015, and was the principal contributor to the Political Animal blog.