ABC News will have a new poll at 6:30 PM EST tonight testing the tax cut, the war, and a horse race of the current 2004 Presdiential field.On the Presidential level, still picking apart the results of the past weekends results in Iowa, all six Dem Cadidates will speak tonight at the Pro-Choice America's Dinner at the Omni Shoreham hotel. Receptions start at 6PM, events begin at 7.Division of pro choice activists is key right up there with labor and African Americans. The echo-chamber effect for anyone who does well tonight or poorly will be huge. Watch on C-SPAN how...