House Democrats are preparing to reject a measure to avoid a government shutdown expected to reach the House floor on Friday, potentially teeing up a high-stakes confrontation as Republicans dare them to own the fallout.

The impasse has set the stage for another volatile showdown ahead of the Sept. 30 government funding deadline, with federal workers and agencies bracing for a potential shutdown.

Republicans are pressing for a “clean” seven-week extension of federal funding that pushes the fight into late November. The party controls both the House and the Senate, but can’t get any spending bill through the upper chamber without the support of some Democrats. The House could vote on the GOP continuing resolution as early as Friday.