Is Mitt Romney unbeatable?

In campaign 2012, Mitt Romney finished well ahead of Newt Gingrich in the Nevada caucuses with Ron Paul and Rick Santorum behind them. The GOP race moves this week to Colorado, Minnesota, Missouri, and Maine.

CBS News correspondent Jan Crawford, who is following Romney in Colorado, said that with his landslide victory last night, the former Massachusetts governor has now won three of the first five states for voting. And with his momentum and organization, it's going to be hard for anyone to stop him now.

Surrounded by thousands of supporters, Romney sounded like he already was in a head-to-head matchup with President Obama.

"This president's misguided policies have made these tough times last longer," he said to his Nevada supporters...If elected president, my priority will be worrying about your job, not saving my own.

Romney to Obama: "Not so fast"
How Romney won the Nevada caucuses
CBS News: Romney wins Nevada

He won big in nearly every category of voters and edged rival Newt Gingrich with groups he needed to win: the very conservative (46 percent to 25 percent), Evangelicals (43 percent to 28 percent) and Tea Party supporters (47 percent to 25 percent).

And look at this statistic: Among voters who said beating President Obama was the most important factor in their decision, Romney won 70 percent of the vote.

That widespread support had even Romney's wife Ann looking ahead to November. "Now that we have all of you excited and energized and volunteering, we're going to need you again next November," she said,.

But despite his decisive victory, this race is far from over. Rick Santorum and Ron Paul are campaigning hard here in Colorado and other states that are up next. Gingrich is vowing he is going to stay until the bitter end.