Top Democrats plan to hold votes in the House of Representatives next week on a budget resolution that could clear a path for future passage of a $3.5 trillion, 10-year social and environment package. The move suggests a showdown on the matter with rebellious party moderates.

Nine centrist Democrats have threatened to vote against their own party’s budget blueprint. These votes will be enough to defeat it in the closely divided House. They want the chamber to first approve a separate $1 trillion bill financing highway, water supply, and other infrastructure projects, their top priority.

According to a report by the Associated Press, House Majority Leader Steny Hoyer said on Tuesday that he would like the chamber to approve the budget resolution next Tuesday.

All the Republicans are expected to oppose the bill and If they do, Democrats could lose no more than three of their own votes and prevail. The budget’s congressional approval would prevent Republicans from killing the subsequent $3.5 trillion bill, probably this fall, from bill-killing Senate filibusters.

“Remember the psychology of consensus. We are in this together, we have the leader of our party and we are pursuing the attainment” of our agenda, Hoyer said, according to the person on the call.

House Speaker Nancy Pelosi and other leaders reiterated that a final vote on the public works bill would wait until the larger $3.5 trillion measure progresses, according to AP.

The two bills are President Joe Biden‘s personal agenda and they also represent Democrats’ aspirations for bracing the economy, supporting families, and combating climate change.

The reason that the Democrats want the larger bill to move lies in the hope that moving both measures together — rather than quickly approving the infrastructure bill — would pressure moderates to also back the $3.5 trillion package, which they consider too expensive.

“We must build consensus and Build Back Better with women, fiscal responsibility, with justice,” said Pelosi.

The House plans to vote on Monday evening on a procedural measure setting up the future debate for the budget resolution, the infrastructure legislation, and another Democratic priority restoring federal authority over states’ voting procedures that were curbed by the Supreme Court.

“All three are critical elements of the president’s agenda, and we hope that every Democratic member supports this effort,” said White House deputy press secretary Andrew Bates.

Hoyer said he also wants the House to approve the voting rights measure on Tuesday and wrap up business. That proposed schedule could pressure moderates to support the budget, since sticking to their planned opposition could extend the House’s stay in Washington until the standoff is resolved.

Some moderates hope the chaotic US flight from Afghanistan might prompt Biden to seek a quick accomplishment by reversing course and asking the House to quickly send him the infrastructure legislation. The Senate approved the infrastructure measure last week in a bipartisan vote.

“I think more than ever, if the White House would play this smart, they would get a domestic win right now. And that is, bring up the bipartisan infrastructure bill,” Rep. Henry Cuellar,  one of the nine unhappy moderates,” said in an interview.