With a month to go before the midterms, Republicans stand a decent and ever-improving chance of taking control of the Senate, according to respected political prognosticator Larry Sabato. In his Crystal Ball blog, Sabato writes that a one- to three-seat GOP majority is now the mostly likely outcome, a sharp reversal from the the current 55-45 Democratic majority. "About the best Democrats can hope for is a 50-50 split with Vice President Biden breaking the tie," he writes with Kyle Kondik. They caution that big gaffes by the GOP in the home stretch could change the outcome, adding that Republicans should be plenty worried about Kansas. Some highlights: