Today at MSNBC HQ, cupcakes for all. The occasion? MSNBC’s win Tuesday in primetime, beating CNN and Fox News for the first time ever when all three networks were in head-to-head programming. In the 10pm hour, MSNBC also beat ABC and CBS. Wednesday numbers should be out in a few hours. And because NBC did not air a 10pm special due to the Giants-Cowboys game, MSNBC might have an even better night.