Tim Gaynor visited a polling place at the Kenilworth Elementary School -- reportedly where Barry Goldwater went to school -- in Phoenix this morning. Although Romney is leading in Arizona polls, Tim encountered Santorum and Paul supporters:

Citing his support for Israel, contractor Rand Vogel said he voted for Santorum — and said he did not trust Romney.“Obama will stab us in the front, Romney will stab us in the back. I don’t trust that he has the same views that I do on the free market,” he said.

For university lecturer Bruce Voris, a vote for Santorum was partly tactical. “He’s the more conservative candidate, and he’s polling really well in the battleground sates against Obama — better than Romney,” he said. “That electability thing, Romney had that kind of mantle, but I don’t think it’s been proven.”

Game designer Shane Stevens voted for Ron Paul. “I believe in his conservative message of limited government,” Stevens said. “He’s the only candidate out there that actually has a battle plan for saving the Republic economy-wise. He wants to cut a trillion dollars off the national debt in the first term.”

“Romney is a paper tiger. If you vote for Romney you’re basically voting for Obama, because all his policies are essentially the same.”

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Grand Rapids waitress decided Santorum at the last minute because of "character" and she liked he left campaign bec of Bella

RT @sportsguy33: Duke wouldn't credential Grantland for Saturday's UNC-Duke game. I already hated Duke but was diplomatic about it... no ...

Latest futures trading on InTrade shows Romney with 55.1 percent chance of winning Michigan primary against 44.9 percent for Santorum.

InTrade sometimes offers spurious odds--in October of 2008 it forecast John McCain winning that year's presidential election by 10 points, but in this case it is almost identical to the odds given by the forecast model of New York Times pollmeister Nate Silver.

Just asked Santorum if he's gonna win. Shrugged. "I'm not a pollster. We don't even have a pollster."

And yeah, def heard one reporter ask a human how many robocalls she had made today

Santorum: gas prices "had an impact on the recession in 2008." But did they cause? "Ok, they contributed, that's a better way to say it."

More Santorum: "No, I'm not a heavyweight. I'm not a multi-millionaire."

Michigan polls close at 8 pm Eastern. Arizona's close at 9 pm Eastern/7 pm Mountain.

In the Detroit suburb of Farmington Hills, Raphael Boji, 62, a developer and realtor who moved to the U.S. from Iraq in 1968, tells Reuters' Eric Johnson that he voted for Romney because believes he "has more guts than the other guys." Romney "is a home town boy, of course. And I think he will make a good President. The country and the people have to come first and we need someone who can do something about the economy. The present President is not doing anything about the economy so we need some changes.”

Beth (she would not give her last name), 45, who works at General Motors, also voted for Romney. "I like somebody who is more center of the road," she said. "I don’t like all the swinging back and forth. I view Obama, who I did vote for [in 2008], as too far to the left and I view the other Republican candidates as true conservatives, who are too far to the right for me.”

“I want a candidate who is fiscally conservative and socially liberal, but that candidate does not exist – but Mitt is the closest to that.”

August Vortriede, 53, an engineer and Santorum voter, told Eric that he liked Santorum's "adherence to the constitution."

“I’ve always liked Santorum but it’s more what I don’t like about Romney," he said. "He is just saying he is a conservative and I do not believe him.”

Romney told Fox Business Network tonight that he doesn't think there is "any prospect of a brokered convention" and the four Republican candidates "would find a way to make it work amongst themselves"

CNN points out that the Ron Paul campaign is in Springfield, Va., tonight instead of Michigan or Arizona. Paul and Romney are the only candidates who qualified for the primary ballot in Virginia.

Just how close are Romney and Santorum in the latest polls?

RealClearPolitics charts out the four most recent polls in Michigan and Arizona, and in Michigan, they're in a dead heat:

Mitchell/Rosetta Stone (2/27) found Romney 37 percent, Santorum 36 percent
PPP (2/26 - 2/27) found Romney 37 percent, Santorum 38 percent
Rasmussen Reports (2/26) found Romney 38, Santorum 36
WeAskAmerica (2/26) found Romney 37 percent, Santorum 33

In Arizona, by contrast, they're not very close at all:

WeAskAmerica (2/26) found Romney 43 percent, Santorum 27 percent
PPP (2/26) found Romney 43 percent, Santorum 26 percent
Rasmussen Reports (2/23) found Romney 42 percent, Santorum 29 percent
NBC News/Marist (2/19 - 2/20) found Romney 43 percent, Santorum 27 percent

Crossover voting! Exit polls by CNN say 10 percent of Michigan voters in the Republican primary were Democrats.

How did Romney do in Michigan and Arizona in the 2008 primaries?

In Michigan, Romney won, beating John McCain 38.9 percent (338,316 votes) to 29.7 percent (257,985 votes).

In Arizona, he finished second to McCain, who won in his home state with 47.2 percent of the vote (255,197 votes) to Romney's 34.5 percent (186,838 votes).

"I'm fed up with things," one democrat told CNN after he voted for Santorum in Michigan. "It's going to throw the GOP into some turmoil."