As It Happens

Secret Service agents quickly apprehended a man who possibly attempted to "glitter bomb" Mitt Romney.

CNN's Anderson Cooper talks to a panel of political experts about Rick Santorum's acceptance speech.

Presidential candidate Mitt Romney addresses his followers after losing both Missouri and Minnesota to Rick Santorum.

Rick Santorum's clean sweep in Colorado, Minnesota and Missouri on Tuesday was the latest plot twist in what was already a potboiler of a Republican presidential campaign. Here are five things we learned from Tuesday:

Tim Stanley says after his wins in the Midwest, Rick Santorum is emerging as a tragic hero of American conservatism: so much potential, such missing momentum

As he was handily winning three Republican contests and stalling frontrunner Mitt Romney's clear path to the Republican presidential nomination, Rick Santorum proclaimed to CNN that the 2012 GOP race was now "in a little bit of no man's land."

CNN's Dana Bash talks with GOP presidential hopeful Rick Santorum about his victories in Missouri and Minnesota.

The chairman of the Colorado Republican Party announced live on CNN that Rick Santorum is the winner of the state's GOP caucuses. Earlier Tuesday night, CNN also projected that Santorum is the winner in Minnesota and Missouri.

A CNN panel reacts to GOP candidate Rick Santorum winning the Missouri primary.

Roland Martin asks why Missouri is spending $7 million on a vote that has no effect on which GOP delegates will be chosen.

Ron Paul speaks to supporters after his second place finish in the Minnesota caucuses.

GOP presidential candidate Rick Santorum targeted Barack Obama after winning Minnesota and Missouri.

CNN contributor Ari Fleischer says Rick Santorum can expect more media scrutiny following his wins Tuesday night.

Gloria Borger says Mitt Romney doesn't seem comfortable talking to Americans about money, and Newt Gingrich can't control his anger

CNN's Jessica Yellin describes how the White House is reacting to Rick Santorum winning the Missouri primary.

Deja vu, round two, a bad sequel or simply "here we go again" are some ways to describe the latest fight over extending the payroll tax cut. But even facing an end-of-month deadline before the 2% tax holiday expires, lawmakers appear no closer to a deal.

LZ Granderson encourages anybody against the "strip club" bill to walk into a manufacturing plant and ask workers how they feel about their tax dollars being spent on strippers -- by welfare recipients no less.

Moments after the energetic Madonna entertained fans during the halftime show at Sunday's Super Bowl, millions of television viewers got an emotional jolt back into reality. Amid the close-up shots of factory workers and Midwest families, were there political undertones in Chrysler's Super Bowl ad?

After passing 23 temporary extensions, the Senate voted 75 to 20 Monday to approve a long-term funding bill for the FAA and sent it to the president for his expected signature.

California's voter-approved ban on same-sex marriage violates the U.S. Constitution, a federal appeals court in San Francisco ruled Tuesday.