MPR's Tom Scheck reports on final senatorial debate, hosted by Minnesota Public Radio, where the three major party candidates made their pitch to voters on the last full day of campaigning before Tuesday's election. Democrat Amy Klobuchar, Republican Mark Kennedy and the Independence Party's Robert Fitzgerald sparred over global warming, prescription drug costs and the war in Iraq. Klobuchar continues to hold major leads in all the independent polls, but Kennedy believes he's closing the gap in the final days of the election.