As Senate Majority Leader Harry Reid leads the Democratic Party to its Waterloo, a new Rasmussen poll shows just 38% of voters favor the health care plan proposed by President Obama and congressional Democrats.

That's the lowest level of support measured for the plan in nearly two dozen tracking polls conducted since June by Rasmussen Reports.

The latest Rasmussen Reports survey finds that 56% oppose the plan a clear majority and a warning to Democrats that their control of Congress will likely slip away in 2010 as they continue to push their big government higher taxes agenda.

From Rasmussen Reports:

Half the survey was conducted before the Senate voted late Saturday to begin debate on its version of the legislation. Support for the plan was slightly lower in the half of the survey conducted after the Senate vote.

Prior to this, support for the plan had never fallen below 41%. Last week, support for the plan was at 47%. Two weeks ago, the effort was supported by 45% of voters.

Intensity remains stronger among those who oppose the push to change the nation's health care system: 21% Strongly Favor the plan while 43% are Strongly Opposed.

Rasmussen Reports is continuing to track public opinion on the health care plan on a weekly basis. Next week's Monday morning update will give an indication of whether these numbers reflect a trend of growing opposition or are merely statistical noise.

Only 16% now believe passage of the plan will lead to lower health care costs. Nearly four times as many (60%) believe the plan will increase health care costs. Most (54%) also believe passage of the plan will hurt the quality of care.

As has been the case for months, Democrats favor the plan while Republicans and voters not affiliated with either major party are opposed. The latest numbers show support from 73% of those in the president's party. The plan is opposed by 83% of Republicans and 70% of unaffiliated voters.

For more poll results and analysis, check out Rasmussen Reports