While there was quite a load of data on the presidential campaign beat today (much of the national polling, incidentally, coalescing around the same result—Obama +1), today was really a day for the battle for the balance of power in the U.S. Senate to take center stage. And, on balance, Democrats have to be pretty happy about where they stand in the quartet of races which showed new data today.

On to the numbers:

PRESIDENTIAL GENERAL ELECTION TRIAL HEATS:



A few thoughts, as always, await you just past the jump ...