The House moves to vote on a Senate-passed fiscal crisis bill as early as Tuesday evening, despite conservative lawmakers' concerns.

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House leaders are planning to call a vote on the Senate-passed fiscal crisis bill as early as Tuesday night, moving ahead despite the concerns of rank-and-file Republicans about the lack of spending cuts in the package.

The House began its debate on the bill Tuesday evening.

Lawmakers were moving quickly, after Republicans spent the day weighing their options against a tight deadline. If they are to act on the bill, they have less than two days before a new congressional class is sworn in.

House Speaker John Boehner had earlier presented members with two options, sources told Fox News. The first would be to craft an amendment to the Senate bill that would add a package of spending cuts. However, it was determined that such a measure did not have enough votes to pass, so lawmakers were moving on to option two – an up-or-down vote on the Senate bill.

The vote comes amid increasing pressure from House Democrats and the Senate side. Democratic House leaders said Tuesday the time for talk was over and pushed their Republican counterparts for a vote. But even as House Minority Leader Nancy Pelosi, D-Calif., called for a compromise, word came that the No. 2 House Republican, Eric Cantor, opposed the bill.

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