Rasmussen Reports says GOP ahead by ten points on the generic congressional poll:

Republican candidates have now stretched their lead over Democrats to 10 points in the Generic Congressional Ballot, their biggest lead ever in nearly three years of weekly tracking. The GOP has been leading on the ballot for months.

The new Rasmussen Reports national telephone survey finds that 45% would vote for their district’s Republican congressional candidate while 35% would opt for his or her Democratic opponent. Voter support for GOP congressional candidates increased slightly from last week, while support for Democrats fell two points.

Republicans started 2010 ahead by nine points, while support for Democrats fell to its lowest level over the same period. Towards the end of 2009, GOP candidates enjoyed a more modest lead over Democrats, with the gap between the two down to four points in early December. Since the beginning of the year, however, the Republican lead hasn’t dipped below seven points.

Even if Rasmussen’s polling overstates Republican support, the GOP advantage appears to be large and stable.  Passage of health care “reform,” especially through a procedural trick, will not go down well with an electorate already riled against the ruling party.