No party is losing people. The mid-term election is about 6 months away. Characterizing a national view of Pelosi as a reflection of the party as a whole is poor politicing.
If you want a poll that isn't CBS unscientific perhaps we should use something more scientific.
NDN is the most recent scientific poll I know of. It polls people view of their party of choice.
Here's the lay of the land (pre-healthcare)
Strong Democrat 18%
Not strong Democrat 12%
Independent, lean Democrat 17%
Independent, not lean 20%
Independent, lean Republican 13%
Not strong Republican 8%
Strong Republican 13%
The majority of Republicans are still the Boomers and Silents. 9 out of 10 Republicans are whites and the majority are from the south. They are in the minority.
How many Americans are against the Healthcare that might sway from the 47% left to the 31% right? A
Gallop poll conducted on 3/22 asking if people were glad healthcare passed showed that a 40% were not happy and 50% were happy. Those that support the healthcare outnumber those that do not.
Overlay those percentages and you see the face of the nation has not changed in any significant way.
Gen-Y is on the raw end of jobs, started under Bush, they know this. Gen-Y now has healthcare, at least till they are 26. Something is better than nothing. The job picture appears to be stablizing. Inflation is unchanged. People are more positive this year than last on the economy. If job growth and the economy are positive in the next 2 years the Gen-Y, who outnumber the Boomers and the Boomers continue to die off, will decide the election in 2012. Look back at the stats they ain't Republican and they don't have a Republican steering the boat.
Mid-terms -- History is on the side of incumbents. Republicans have more retirements than Dems. Republicans winning 40 seats is the long shot bet. The Senate, they need to keep their 18 and win 10 out of 16 from the Dems. This too isn't a shoe in. I suspect they might make some gains, control is unlikely.