this is omaha beach. tonight, the battle of 2012 begins. finally, first from fox this tuesday night, an hour from now thousands of iowa republics will meet at caucus sites across this state to make their choices for the presidency of the united states. based on their track record, they may not choose the president or even the g.o.p. nominee. but they could help narrow the options for the rest of the country. the latest polls predicting a photo finish former massachusetts governor mitt romney, ron paul and rick santorum. it s a heck of a come back for rick santorum, too. analysts say he may be surging at the perfect moment with no time left to fade away like so many of his rivals have. this is an important moment for our country. we are at a critical path. every generation, every generation of leaders has an obligation to be able to pass on to the next generation something greater. shepard: rick santorum going after congressman ron paul calling him disgusting. accusing h