These are the 10 Senate races, out of 37 contests today, that are most likely to determine which party --- if any --- controls the upper house of the US Congress up to the 2012 Presidential contest.
With the current balance at 59 Democrats/Democratic-allied Independents and 41 Republicans, the GOP needs to win all 10 of these battles to take a slim majority. If the Republicans win nine, the Democrats maintain nominal supremacy through the casting vote of the presiding officer, Joe Biden.
Other high-profile races that are unlikely to affect the overall picture:
Delaware: Christine O'Donnell, the Tea Party candidate who has livened up this campaign (especially on the pages of EA USA), is now trailing significantly to Democrat Christopher Coons.
Kentucky: Rand Paul, the first Tea Party insurgent to topple a Republican in a primary, is odds-on favourite to hold the seat for the GOP against Democrat Jack Conway.
Florida: In a three-way contest, upstart conservative Marco Rubio will probably win for the Republicans against Governor Charlie Crist, who left the Republicans in April to run as an independent, and Democrat Kendrick B. Meek.
Alaska: Another three-way battle, with Tea Party and Sarah Palin favourite Joe Miller likely to triumph over Lisa Murkowski, the Governor whom he defeated in the Republican primary, and Democrat Scott McAdams.
Now the key contests....
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