It may be a reflection of polarization or of dissatisfaction with Washington gridlock, but voters also are yearning for one-party control. 44% of voters we polled told us their preference was to have President Obama re-elected with a Democratic Congress; 41% preferred a President Romney and a Republican Congress. Just 8% told us they'd prefer divided government. Some Senate contests have seemed to operate in a vacuum, driven by individual candidates rather than determined by traditional red and blue patterns. But don't be surprised if Senate fights in some of these states - think Florida and Ohio - end up closer than they've appeared; and if races in Nevada, Wisconsin and Virginia come down to the wire.