Democrats have at least slim leads in races for six of the seven most vulnerable Republican Senate seats, giving them a shot at winning control of the Senate on Tuesday, according to Reuters/Zogby polls released on Thursday.
With Democrats needing to gain six Republican seats for a Senate majority, extremely tight contests in Missouri, Virginia and Montana could determine the balance of power.
Democrats led Republican incumbents in Pennsylvania, Ohio, Missouri, Montana, Virginia and Rhode Island, but only the Rhode Island and Pennsylvania races were outside the polls' margin of error of plus or minus 4 percentage points.
In Virginia and Montana, Democratic challengers had slim 1-point leads on Republican incumbents, offering plenty of opportunities for momentum swings and lead changes in the final days.
http://news.yahoo.com/s/nm/20061102/pl_nm/usa_elections_poll_dc