Five things we learned from Santorum's sweep

Michelle Obama challenges Jimmy Fallon

Santorum: Race in 'no man's land'

Santorum claims momentum after 3-state sweep

Payroll tax cut extension stalls again

After much delay, Senate clears FAA bill

Republicans propose alternative plan to budget cuts

Don't pick a fight with Clint Eastwood

Gingrich and Romney both have issues

'Strip club bill' a no-brainer

A moon colony is a waste of money

Gingrich looks to Super Tuesday lift

Analysis: Conservatives still resist Romney

Analysis: Conservatives resist Romney

Gingrich looks to Super Tuesday lift

Why has GOP turnout taken a dive?

First lady challenges Jimmy Fallon

Five lessons from Santorum sweep

Avlon: Why has GOP turnout taken a dive?

Washington state OKs same-sex marriage

CNN suspends analyst Roland Martin

Romney promises to get more aggressive with Santorum

Stanley: Is Santorum surge for real?