However, Volsky said it's unclear if the strategy is going to work, as conservative House Democrats such as Bart Stupak have been voicing concerns about the Senate bill's lack of strict anti-abortion language, and could take up to 30 House Democrats with him if he votes "no."

"Nobody really knows at this point, certainly the President and leadership are hoping they can get enough votes," Volsky said.

With his biggest domestic agenda hanging in the balance, Obama stopped delegating the job to Congressional leaders such as House Speaker Nancy Pelosi and Senator Max Baucus, and offered his version of the health bill on Feb. 22, which drew heavily on the Senate bill.

He even convened a bipartisan health summit on Feb. 25, but failed to win over Congressional Republicans. He incorporated some of the Republican ideas in his final version proposal on Wednesday, but the Republicans are not buying.

House Republican Leader John Boehner dismissed Obama's renewed proposal as "sprinkling a few sensible Republican proposals onto a fundamentally-flawed 2,000-page bill."

Obama clearly anticipated the reaction. He said the Congress should vote on the bill with or without Republican support, suggesting they use reconciliation, a legislative measure that only needs a simple majority to push forward a controversial budget bill in the Senate, as the Democrats are one vote short of a filibuster-proof supermajority.

Apart from the Congressional side, there's the opinion of the voters, which many Democratic lawmakers are at pains to win because of the mid-term election later this year.

Obama tried to gather the popular support.

"I urge every American who wants this reform to make their voice heard as well -- every family, every business owner, every patient, every doctor, every nurse," he said.

The White House also announced Obama is to travel to Pennsylvania's Philadelphia and Missouri's St. Louis next week to discuss the health insurance reform, trying to win over the mainstreet, which, if he succeeds, would convince many politically vulnerable lawmakers to vote for the final bill.

Although many Americans don't like the health reform bills, they certainly like what's inside the bill, Volsky observed, citing overwhelming support for many reform measures in the bill.

The message "clearly hasn't been coming across very well," Volsky said, "it's really up to Democrats, up to the President to try and explain what's in their bill."