On this day in 1937 President Roosevelt announced his proposal to expand the Supreme Court to 15 justices. The proposal was immediately attacked as a "court-packing" plan, resulting from Roosevelt's frustration with the Court striking down many elements of his New Deal as unconstitutional. On to today's top stories:

"As 24 States Vote, a Grab for Delegates, and an Edge" (Adam Nagourney, New York Times) OK, you've avoided it long enough. It's time to try to wrap your head around what in the world is really going on today and reporter Nagourney offers a helpful guide. On the Democratic side, keep in mind that the winner of a particular state will be decided before all the delegates are counted, but it's the delegate count that really matters.

"8 Questions Super Tuesday Could Answer" (Dan Balz, Washington Post) Reporter Balz helps put today in some context.

"Super Tuesday Vote Stretches From Coast to Coast" (Scott Shepard, Cox News Service) How does that Mellencamp song go? "From the East Coast to the West Coast, down the Dixie Highway..." Anyway, reporter Cox breaks down poll closing times in each state, so plan your dinner accordingly and then keep your browser on the RCP Blog for important updates and brilliant analysis.

"Romney, McCain Make Last-Minute Pitches" (David Jackson and Andrea Stone, USA Today) Criss-crossing the country looking for those last-minute votes, Mitt Romney and John McCain both managed to end up in California -- Romney last night, McCain this morning. The issue: Who is the more genuine conservative?

"Limbaugh on McCain: It's Better to Be Right All the Time" (Howard Kurtz, Washington Post) Helping to answer that question is Rush Limbaugh, along with a host of conservative talkers who in recent days have come out strongly against McCain. Faced with a McCain presidency, Rush said in an interview, he would rather the Democrats win the White House: "If I believe the country will suffer with either Hillary, Obama or McCain, I would just as soon the Democrats take the hit . . . rather than a Republican causing the debacle."

"Trudging to a Super Finish" (Christina Bellantoni and Donald Lambro, Washington Times) Meanwhile, the Democratic candidates are busy trying to outdo each other in the lower of expectations game. Behind the spin is this truth: The race will certainly last beyond today.

"Bob Dole Defends McCain From Critics" (Libby Quaid, Associated Press) The 1996 GOP nominee defended the potential 2008 nominee in a letter to El Rushbo, asking him to lay off the heated criticism and cited McCain's conservative credentials. "Whoever wins the Republican nomination will need your enthusiastic support," Dole wrote.

"Expect Record Turnout, Long Wait for Results" (John Wildermuth and Zachary Coile, San Francisco Chronicle) Beating the record set in 2000, California expects 8.9 million voters to cast ballots in today's primary. Yay, democracy! Unfortunately, for those of us east of the Rockies, this means we won't be getting to bed much before midnight. Boo!

"Bloomberg in No Rush to '08 Decision" (Sara Kugler, Associated Press) Oh, right, Mike Bloomberg is still here and taking his sweet time. McCain's comeback and imminent nomination (if he doesn't blow it today), however, puts a Bloomberg run into question. Just how would he stand out?

Get today's other election stories at RCP's Politics and Election page.