Her comments hinted at the political calculation for Ms. Pelosi, who has consistently pressed for a more generous bill as Republicans have balked at providing more aid, and she sees little political downside to continuing to press the White House for more concessions, no matter what the calendar says. They also underscored a grim political reality for Mr. Trump, who is watching the clock much more closely, knowing that he is likely to be judged by voters on the strength of the economy and his handling of the coronavirus pandemic.

With only six workdays remaining before Election Day, time has essentially run out for a stimulus deal to be enacted before the final day of balloting, with Ms. Pelosi previously telling reporters that text would need to be completed by the end of this week in order to become law by Nov. 3.

Any agreement would take days to be hashed out into legislative language, receive an official cost estimate, and be approved by the House. It would take at least another few days for such a deal to make it through the Senate, where major legislation needs 60 votes to advance and Republican leaders have said they have no interest — and few if any votes — for the kind of compromise the White House and Ms. Pelosi are contemplating.