Odds improving that Republicans will take control of Senate

From The Hill Newspaper:

. . . Republicans say they are on the verge of being able to wrest the four seats they need to regain control of the upper chamber (three if Romney wins), but Democrats still appear to be in line to barely hold on to the majority.
Things have improved for the GOP in Nevada, with Rep. Shelley Berkley’s (D-Nev.) ongoing ethics controversy hampering her chances of defeating Sen. Dean Heller (R-Nev.) in that state’s tight race.
At the same time, increasingly nasty and expensive GOP primaries in Arizona, Michigan, Missouri and Wisconsin have the potential to hurt the party’s chances come November.
In Florida, Rep. Connie Mack (R-Fla.) has spent weeks fighting with the local media rather than focusing on Sen. Bill Nelson (D-Fla.), who is favored to win reelection. . . .