What’s the Loop reading this morning?

End Games — With the GOP presidential race all but over, the also-rans are mapping out their end games. Santorum’s identified his must-win states, our colleague Aaron Blake reports. Meanwhile, Newt Gingrich is relishing playing the role of spoiler, our colleagues Nia-Malika Henderson and Felicia Sonmez report.

Heads Up — Our colleague Laura Vozzella poses this question, in her story about the end of the sidewalk party outside Supreme Court oral arguments on the health-care case: “What the heck does a 78-year-old guy in a giant foam justice head — he thinks it’s Justice John Paul Stevens but isn’t sure — do all day when there’s not a historic Supreme Court case to protest?”

Which begs another question: where the heck does one obtain a “giant foam justice head”?

The party at the Supreme Court is over. (JONATHAN ERNST/REUTERS)

Senate Rivals — Senate Minority Leader Mitch McConnell better hope he doesn’t need to round up crucial votes anytime soon. The Kentucky Republican, a graduate of the University of Louisville and the University of Kentucky (whose basketball teams will face off in Saturday’s hotly-anticipated NCAA Final Four matchup) took to the floor to rib colleagues from other states whose teams are still in the tourney, according to our colleague Ed O’Keefe. “Let me say that again, so my friends in North Carolina can hear it: Uof L and UK have the best rivalry in all of college basketball, and the Commonwealth of Kentucky is the best college basketball State in the Nation,” he boasted.

Kid Janitors — Remember New Gingrich’s plan to uplift poor students by making them all.. janitors? We had forgotten it, too, until the GOP hopeful actually had an encounter with a former child janitor, who, according to our colleague Felicia Sonmez, didn’t find the experience so empowering.