Rick Santorum and Mitt Romney split six states and dueled in an almost impossibly close race in Ohio on a Super Tuesday that stretched from one end of the country to the other in the most turbulent Republican presidential race in a generation.
Rick Santorum was drawing robust support Tuesday from the most conservative voters in Ohio's Republican presidential primary, according to early results of an exit poll of voters. He was also managing a modest lead over rival Mitt Romney among the state's blue-collar voters, whom he has targeted in his drive to slow Romney's march toward the GOP nomination.
The Super Tuesday results are coming in and candidates vying for the Republican presidential nomination are taking time to address their supporters.
Watch live video of the contenders speaking on election night.
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The Republican presidential primary had its biggest day yet on Tuesday, when 10 states went to the polls to vote for the GOP nominee.
With 419 delegates at stake, Super Tuesday was crucial for the four remaining candidates, Mitt Romney, Rick Santorum, Newt Gingrich and Ron Paul. Naturally, political observers had plenty to say about the results.
Here is a look at what people are saying about Super Tuesday on Twitter. Scroll farther down to follow The Huffington Post's Twitter dashboard.