Republican presidential hopeful Newt Gingrich made his final pitch to Nevada voters on Friday -- a day before Republicans caucus in the Silver State -- with an attack on rival Mitt Romney.

“Tomorrow's caucuses in Nevada are incredibly important,” Michael Krull, Gingrich’s campaign manager wrote to supporters on Friday. “As we continue to move toward the convention, it's important for us to turn out Newt's supporters, win delegates, and win states. This race is as important a nomination process as the Republican Party has ever seen. Will we unite behind a Reagan conservative with bold solutions to the problems facing America? Or will we once again allow a liberal Republican to be the standard bearer for our party? The first thing I'm going to ask you to do is view and share this video highlighting Mitt Romney's record, because America cannot afford a choice between two George Soros-approved candidates in the fall.”