Ten states are up for Super Tuesday tonight, but the results of the 2012 Ohio Republican primary are perhaps the most critical.

No Republican nominee has ever become president without winning Ohio in the general election. There are 63 delegates up for grabs Rust belt swing state tonight to be divided proportionally among the top candidates, the largest number of delegates in one state on Super Tuesday besides Georgia.

According to the most recent CNN/Time poll, Mitt Romney and Rick Santorum remain tied at 32 percent support each, followed by Newt Gingrich at 14 percent and Ron Paul at 11 percent.

If Rick Santorum wins Ohio on Super Tuesday by a good margin, he could go from an unlikely frontrunner to the presumptive nominee, proving that his emphasis on social issues over economic ones won't alienate him from potential voters.

If Mitt Romney takes Ohio, however, his status as the de facto nominee throughout the Republican primary race will become a near-certainty. It will also show that he can appeal to blue-collar families, the core of Ohio's voting base and one area where Romney's rich guy gaffes have cost him potential votes.

Find out when to look for the results of the 2012 Ohio Republican primary, where to watch on TV and online, and how to follow the race on Twitter, by scrolling through the information below. Ohio voters can look up voting information here.

When to Watch Results:

Ohio polls will close at 7:30 p.m. EST (6:30 p.m. CST). Results are expected to come in starting at 8:00 p.m.

Where to Watch Results On TV: POLITICO's live results show for Super Tuesday will begin at 6:30 p.m. EST and will air nationally on C-SPAN.

CNN's coverage will begin at 7:00 p.m. EST with anchors Wolf Blitzer, Anderson Cooper, Erin Burnett, John King and Candy Crowley, who will headline the network’s America’s Choice 2012: Super Tuesday special programming from the CNN Election Center. Beginning at 1:00 a.m. on March 7, the network will air a live special edition of Anderson Cooper 360.

MSNBC's coverage will begin at 5:00 p.m. EST with a special edition of Hardball with Chris Matthews, followed by coverage by Matthews, Rachel Maddow, Reverend Al Sharpton, Ed Schultz and Lawrence O’Donnell beginning at 6:00 p.m. and continuing throughout the evening.

ABC News will air “Your Voice, Your Vote” election updates anchored by Diane Sawyer and George Stephanopoulos beginning at 7:00 p.m. EST. Beginning at 11:35 p.m., ABC's political team will discuss how the results will impact the Republican presidential primary race.

Where To Watch Results Online:

The International Business Times will be live streaming Super Tuesday results starting 7:00 p.m. EST, as well as linking to candidates' speeches and event on the campaign trail.

POLITICO's Super Tuesday coverage will all be streamed live online at POLITICO.com/livestream.

Fox News will be streaming live results of the Ohio Republican 2012 primary and the nine other contest tonight at Fox News Live, along with hosting a live chat on the candidates' performances.

CNN Live will be streaming live coverage of Super Tuesday from the candidates' headquarters, and giving live feed of each of the candidates' speeches at viewing parties across the U.S.

Where to Get Live Updates:

The Washington Post and The Huffington Post will be live-blogging Super Tuesday events throughout March 6, ending with the results from each state.

POLITICO and Google will be following Super Tuesday's Ohio 2012 Republican primary closely. Both sites will provide minute-by-minute live updates of which counties are reporting and what candidate is currently in the lead in the Midwestern state.

How to Follow the Ohio Primary on Twitter:

Use #OHPrimary to join the conversation about Tuesday's election on Twitter. CNN is also sponsoring the hashtag #cnnelection, bringing users live updates from its Twitter page @CNNPolitics.