Ari Berman is a contributing writer for The Nation, covering national politics and the 2008 election, and an Investigative Journalism Fellow at The Nation Institute.

Join Ari for a Politickin with Ari Berman Primary Special rebroadcast.

He'll discuss the results of the Wisconsin and Hawaii primaries with Planet Erstwild's James Moore and Speaking Freely's Dennis Raimondi.

Senator Barack Obama ran away with both contests over Democratic rival Senator Hillary Clinton. This brings the number to 10 out of 10 straight victories for Obama in the run up to primaries on March 4th in Texas and Ohio, states Clinton has previously referred to as her "firewall" in the nominating process.

Click here for a youtube video of Ari discussing "Superdelegates 101."