One Week 'til Iowa, Trump and Cruz Are Neck and Neck

The Iowa caucuses are just one week away, and candidates from both parties are fighting hard to win some last-minute support.

On Sunday, Republican frontrunner Donald Trump visited a Presbyterian church in Muscatine, Iowa, where he heard a sermon on humility.

Trump has been working hard to win over evangelical Christian voters, who are a big key to winning Iowa.

Up until recently, political analysts believed Sen. Ted Cruz's appeal among Christian conservatives would give him a distinct advantage in Iowa. But recent polls show Trump pulling ahead now.

Over the weekend Trump also stirred up some new controversies with his latest edgy comments, boasting about the dedication of his supporters.

"I could stand in the middle of Fifth Avenue and shoot somebody, and I wouldn't lose any voters, okay?" Trump said Saturday in Iowa. "It's, like, incredible."

Cruz responded with a tongue-in-cheek jab.

"I will let Donald Trump speak for himself. I can say I have no intention of shooting anybody in this campaign," the Texas lawmaker said.

With the race tightening, Trump's top opponent in Iowa did receive a big new conservative endorsement.

Conservative media icon Glenn Beck stepped up for Cruz and warned America not to vote for Trump.

"If Donald Trump wins, it's going to be a snowball to hell," Beck predicted.

Meanwhile, polls show Florida Sen. Marco Rubio in third place in Iowa. Rubio has been making a late, aggressive push there and has seen a bump in crowd size.

He got a boost Saturday night with the endorsement of The Des Moines Register.

Rubio is seen as the favorite in some GOP quarters to emerge as the alternative to Trump and Cruz.

But Rubio's Iowa staff doesn't compare with Cruz's, and political analysts wonder if he has built a ground network strong enough to give him a big finish there.

The Democratic race in Iowa has evolved into a surprisingly heated contest between Hillary Clinton and Vermont Sen. Bernie Sanders, the self-described Democratic socialist.

Sanders' late surge has revived memories of Clinton's surprising loss to then-Illinois Sen. Barack Obama in Iowa in 2008.

And just to make this presidential race even more interesting, billionaire Michael Bloomberg now says he's considering a third party run for president. Trump says he would welcome the move.