DEVELOPING: The Senate's top democrat along with the White House made their final pleas for the $14-billion auto bailout bill even as some predicted the hard-fought legislation would be crushed by Senate Republicans by the end of the week. 

"We have danced this tune long enough," Senate Majority Leader Harry Reid declared at midmorning. He said he hoped for separate votes Thursday on compromise legislation backed by Democratic leaders and the White House, and a Republican version.

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A senior Democratic leadership aide told FOX News on Thursday that the 14-billion dollar auto rescue package appears headed toward a quiet death in the Senate.

The emergency bailout bill -- approved 237-170 by the U.S. House of Representatives -- has angered many Republicans who claim it does not require enough accountability from auto makers.  The Republicans have plans to filibuster the legislation to prevent its passage in the U.S. Senate. 

White House press secretary Dana Perino said the president and others are reaching out to skeptical senators on Thursday to convince them that the bailout legislation is "the most effective and reasonable approach."

"We think there's a chance that we can get this done today," Perino said during a morning news conference on Thursday.  "We know this is going to be a tough vote."

Perino said that a rejection of the bailout bill would lead to "wide-spread job loss."

The legislation -- if passed -- would provide money within days to cash-starved General Motors Corp. and Chrysler LLC. Ford Motor Co., which has said it has enough to stay afloat, would also be eligible for federal aid.

Republicans are preparing a strong fight against the aid plan in the Senate, not only taking on the Democrats but standing in open revolt against their party's lame-duck president on the measure.

The Republicans want to force the companies into bankruptcy or mandate hefty concessions from autoworkers and creditors as a condition of any federal aid. They also oppose an environmental mandate that House Democrats insisted on including in the measure.

On Wednesday, auto state Republicans who have pushed hard for a bailout, said the measure needed work. Sen. Kit Bond, R-Mo., said he wanted to see changes. And Sen. George V. Voinovich, R-Ohio, said the measure didn't have the necessary Republican votes to pass Congress. 

The plan will create a government "car czar," to be named by President George W. Bush to dole out the loans, with the power to force the carmakers into bankruptcy next spring if they didn't cut quick deals with labor unions, creditors and others to restructure their businesses and become viable.

Congressional Republicans, left out of negotiations on the package, have blasted the plan. Their opposition reflected the tricky task of enacting yet another federal rescue in a bailout-weary Congress, with Bush's influence on the wane.

"People realize that this bill is an incredibly weak bill, (and) is the product of an administration that wants to kick the can down the road and let somebody else deal with it," said Sen. Bob Corker, R-Tenn. "I think it has minimal -- very little support in our caucus."

The scene so far has been somewhat reminiscent of the tense atmosphere of early October on Capitol Hill, when lawmakers argued, cajoled, threatened and lobbied one another, ultimately passing a $700 billion bailout plan that Bush signed into law for Wall Street financial firms.

House Democratic leaders were confident enough that a bill could advance that they released the text of the 37-page measure. But Majority Leader Steny Hoyer, D-Md., said the House might delay action until it was clear the measure could pass the Senate.

With Republicans balking and many senators absent from the emergency, postelection debate, mustering the 60 votes needed to advance the measure in the Senate was proving tricky.

Sen. Mitch McConnell, the GOP leader, said Wednesday afternoon that his side had only recently gotten a copy of the measure. He said, "Everybody is still kind of poring through it, trying to figure out exactly what it does. But everybody understands the significance of the issue and the enormity of the problem."

Opposition wasn't limited to Republicans.

Democratic Sen. Max Baucus of Montana announced he was against the measure because of a provision to bail out transit agencies. The bus and rail systems could be on the hook for billions of dollars in payments because exotic deals they entered into with investors -- which have since been declared unlawful tax shelters -- have gone sour.

At the White House, too, Deputy Chief of Staff Joel Kaplan told reporters at a late-morning briefing that the administration had yet to read the fine print of its "conceptual agreement" with congressional Democrats.

"We have not seen final text of legislation that we have agreed to," he said

However, he indicated clear support, saying Bush would personally lobby Republicans and was dispatching Chief of Staff Josh Bolten to Capitol Hill to make the case.

House Republicans swiftly voiced their opposition and called for a plan that would instead provide government insurance to subsidize new private investment in the Big Three automakers, demand major labor givebacks and debt restructuring at the companies, and encourage them to declare bankruptcy.

Rep. John A. Boehner, R-Ohio, the minority leader, said the legislation unveiled Wednesday "asks taxpayers to further subsidize a business model that is failing to meet the needs of American workers and consumers."

Under the bill the carmakers would have to submit blueprints on March 31 to the industry overseer showing how they would restructure to ensure their survival, although they could be given until the end of May to negotiate with the government on a final agreement.

A breakthrough came when Democrats agreed to scrap language -- which the White House had called a "poison pill" -- that would have forced the carmakers to drop lawsuits challenging tough emissions limits in California and other states, said congressional aides.

There was still heartburn among Republicans, however, over language that would force the automakers to abide by those states' limits. Democrats insisted on it as a kind of consolation prize for environmentalists, who already were livid that the measure would draw the emergency loans from an existing program to help carmakers retool their factories to make greener cars.

Kaplan said the Bush administration would work with President-elect Barack Obama's team on choosing the so-called "car czar," acknowledging that Bush's tenure ends soon and the automakers' woes will continue well into 2009.

Obama defended the auto bailout as necessary given the threat a potential Big Three collapse could pose to an already battered economy.

"As messy as it may be, I think there's a sense of, 'Let's stabilize the patient,"' he said in an interview published in Wednesday's Chicago Tribune and Los Angeles Times.

The car czar would have say-so over any major business decisions by the automakers while they were taking advantage of federal aid, with veto power over any transaction of $100 million or more. The companies -- including the private equity firm Cerberus, which owns a majority stake in Chrysler -- would have to open their books to the government overseer.

And if Chrysler defaulted on its loan, Cerberus would be responsible for reimbursing the government.

The measure would attach an array of conditions to the bailout money, including some of the same restrictions imposed on banks as part of the $700 billion Wall Street rescue. Among them are limits on executive compensation, a prohibition on paying dividends and requirements that the government share in future profits and taxpayers be repaid before any other shareholders.

Also included in the bill is an unrelated pay-raise for federal judges.

FOX News' Chad Pergram, Trish Turner and the Associated Press contributed to this report.