Washington (CNN) - Rep. Paul Ryan, the top Republican involved in budget talks, told reporters Tuesday that negotiators were closing in on a deal with a Friday deadline for doing so fast approaching.
"We're making really good progress. We're getting close. Don't have a timeline for you," Ryan said.
Ryan and Democratic Senator Patty Murray have spent the past two months working on a budget agreement that would set government spending levels and replace the automatic spending cuts scheduled to hit early next year.
But with fewer than four days left before the deadline to finish work on an agreement, there are signs of pushback from the right and left.
On the Democratic side, two key House leaders, Rep. Chris Van Hollen and Rep. Steny Hoyer, have strongly objected to the idea of including an increase in federal worker pension contributions as part of the deal. Both men represent Maryland districts heavily populated by federal employees.
Another thorn for Democrats? Many are pushing for an extension of expiring unemployment benefits to be in the deal.
Murray put the extension on the table in budget talks. But Tuesday, the No. 2 Democrat in the Senate, Dick Durbin, indicated that the unemployment benefits may be separated from budget talks.
"From my understanding, that's more between Speaker Boehner and (President Barack Obama) at this point," he told CNN.
But Rep. Steve Israel of New York said fellow Democrats are not ready to "concede that it won't be part of the budget."
Meanwhile on the right, conservatives are pushing back at any change in the spending caps that were put in place in the 2011 budget law.
Included in that are controversial forced spending cuts known as sequestration or sequester.
Tuesday, three conservative organizations–Americans for Prosperity, Heritage Action and Freedomworks– issued statements urging conservatives to oppose any deal that would roll back the 2011 caps or set higher spending levels.
The political objections create a significant issue in the House, where any deal would likely need a coalition of Republicans and Democrats to pass.
And Friday is not the only deadline involved.
The House is planning to leave for holiday recess that day and its rules require that members get at least three days to read any bill before voting on it. The chamber has not always stuck to that rule, but it paints a red circle around Wednesday.