Senate Majority Leader Mitch McConnell (R-KY) arrives to talk to the media following the Republicans weekly policy luncheon on Capitol Hill in Washington, U.S., December 12, 2017.

The U.S. government shutdown will go into a third day Monday, as the Senate failed to strike a deal to break an impasse before the work week starts in Washington.

Senate Majority Leader Mitch McConnell will move to advance a stopgap spending bill at noon ET on Monday, he said Sunday night. He hoped to hold a procedural vote on the measure as soon as 10 p.m. Sunday night, but Senate Minority Leader Chuck Schumer objected as Democrats still had not seen enough progress in talks on issues like immigration to move forward.

The stalemate will now last through the start of business Monday, when the effects of the government funding lapse will be felt more heavily. Just under a million federal workers would not go into work if the shutdown persists, while financial markets would have their first chance to react to the dysfunction in Washington.

Speaking on the Senate floor Sunday night, McConnell called for an end to the shutdown and outlined what appeared to be assurances to Democrats, who have nearly all opposed the short-term GOP proposals to keep the government running. McConnell has pushed for a bill to fund the government through Feb. 8, which House Republicans also largely back.

Issues including immigration, health care, disaster relief and military spending have tripped up talks on a longer-term budget.

"Should these issues not be resolved by the time the funding bill before us expires on February 8, 2018, assuming that the government remains open, it would be my intention to proceed to legislation that would address DACA, border security, and related issues," McConnell said. "It is also my intention to take up legislation regarding increased defense funding, disaster relief, and other important matters."