Over the past few weeks, the Romney campaign has repeatedly pointed to five separate studies supporting the candidate's contention that a dramatic, across-the-board, reduction in tax rates can be paid for by economic growth and the elimination of deductions and exemptions for high-income earners.

Romney himself referenced these five studies in an interview with Meet the Press on Sunday. His running mate, Rep. Paul Ryan (R-Wis.), said the same during his run through the Sunday show circuit.