POSTED: Tuesday, March 6, 2012 - 8:58pm
UPDATED: Tuesday, March 6, 2012 - 9:00pm
Voters went to the polls in 11 states today to cast ballots for their GOP presidential picks.
Ohio was the central battleground between frontrunners Mitt Romney and Rick Santorum.
Many Republicans there are unenthusiastic, and split between the two leading candidates.
The pressure is on Rick Santorum.
As voters went to the booths, he went to Washington and spoke to AIPAC, the largest pro-Israel lobbying group.
"Under a Santorum administration we would find no gap between Israel and the United States," Santorum promised.
Mitt Romney appeared via satellite, talking tough on Iran.
"As President, I will be ready to engage in diplomacy but I will be just as ready to engage our military," Romney vowed.
Meanwhile, Ron Paul hopes for good luck in caucus states like Alaska, and in Georgia, Newt Gingrich is expecting a big win.
The former House Speaker assumes he'll win his home state, but Gingrich needs a breakout win in neighboring Tennessee to remain a contender.
Six wins or more, including a win in Ohio, could finally establish Romney as the undisputed Republican frontrunner.