McCain picks up some much-needed conservative cred with an endorsement from Bush 41. Texas State House Democratic Caucus Leader Jim Dunnam also endorsed as promised, and his nod went to Illinois Senator Barack Obama.

Harris County District Attorney Chuck Rosenthal resigned his post today. He has had some trouble recently over a few hundred errant emails, among other things. The Houston Chronicle's Peggy O'Hare has the story.

Mitt Romney endorsed John McCain yesterday, thus delivered a potential 280 delegates or so. This presents a difficulty for Huckabee, who doesn't even have as many delegates as Romney had to give, but who also swears to continue on undeterred.

The bipartisan economic stimulus package was signed yesterday by President Bush, clearing the way for checks to come out in May.

The plan is nearly identical to the original plan passed by the House of Representatives. The bill that went to the White House added checks for veterans and the elderly that fell outside of the original earning limits, which Republicans had been pushing for. The food stamp increases and unemployment benefit extensions that Democrats were holding out for didn't pan out, however.

Yesterday was a tumultuous day for the Clinton campaign.

The Potomac Primaries are over, and McCain and Obama have swept their respective primary contests in Virginia, Maryland, and Washington, D.C.

Well that was fast, and apparently decisive: NBC News is already calling Virginia for Barack Obama. In the other side of that dichotomy, it is too close to call on the GOP side, which might mean bad things for John McCain.

The big news yesterday concerned the dynamic between Huckabee and McCain, and that relationship will likely only get more complicated today as Maryland, Virginia, and Washington D.C. head to the polls and more delegates are handed out.

If you enjoy weekends where many important things happen in national politics, this last one was built just for you. It doesn't hurt to have had a bunch of primaries and caucuses, but there was more to this weekend than voting.

AP is reporting that Congressman Tom Lantos of California has died. More details as they emerge.