As the race for the GOP nomination grows more competitive with each caucus, on Wednesday Piers Morgan invited actor Jon Voight to share his political views. In his first interview since publicly endorsing Mitt Romney, the Academy Award winner explained why he backs the Republican front-runner:

"He's a fellow who shoots from the hip. He's a very charitable fellow as you probably know. And he's warm, honest. He's got great virtues."

According to Voight, Romney's values can be traced back through generations: FULL POST

Amidst the excitement of Rick Santorum's three-state caucus sweep on Tuesday, Piers Morgan welcomed Tom Morrissey for his insight into the current race for the GOP nomination.

"It's another day in the life of Republican primary season," said Morrissey. "I'm a little surprised at the outcome, but not terribly surprised."

The Chairman of the Arizona Republican Party, Morrissey also looked ahead to the upcoming primary in his backyard: "It is a different 'kettle of fish,' we are a different part of the country, we have a different dynamic, and we have different challenges than other parts of the country."

In the above web extra, Morrissey goes on to reveal specific details about Arizona that may favor one of the candidates.

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Amidst Rick Santorum's impressive performance in Tuesday's caucuses, Piers Morgan welcomed a host of political insiders to offer their perspective on the "Santorum Sweep".

While impressed with Santorum's wins in Colorado, Missouri, and Minnesota, Catherine Crier suggested his future may be in another office. FULL POST

Each day, we here at "Piers Morgan Tonight" put together the news you need to know – from what happened last night to what will happen today.

For February 8, 2012 – Rick Santorum jolts GOP presidential race with 3-state sweep, appeals court rejects California's Proposition 8 and Fox explains the 'X Factor' shakeup... FULL POST

Amidst Rick Santorum's dramatic three-state caucus win, Piers Morgan welcomes the former senator's Senior Advisor, John Brabender, for insight into the impact of Tuesday night:

"What's very important to us is that Conservative's and Tea Party supporter's decide that they should unite around Rick Santorum," says Brabender. FULL POST

On the heels of Rick Santorum's dramatic victories in Tuesday's caucuses, Piers Morgan welcomes former Minnesota governor Tim Pawlenty, a Mitt Romney supporter: "Most people sort of expected this, Piers, so with all due respect, it's not really a shock or an unexpected development."

Pawlenty maintains that while Tuesday was a big night for Santorum, his candidate has plenty of success still to come.

"It wasn't Mitt Romney's night in those states but I think you'll see him dramatically reemerge with tremendous victories in the state's that are coming up."

Tune in to "Piers Morgan Tonight" after the conclusion of the caucuses for full analysis and insight from a panel of political experts.

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