The U.S. Senate is expected to hold a test vote on a spending bill on Sunday evening to end the longest ever U.S. government shutdown, with ABC News reporting that enough Democrats now supported the measure.

ABC reported that there will be enough Democratic votes to pass a measure approving funding for the government until January 31, citing a senior Democratic senator.

The bill is unlikely to include any extension of the Obamacare subsidies that the Democrats have been holding out for, ABC reported.

The ABC report came just before the Senate kicked off a rare late-Sunday session at 6:00 PM ET (11:00 PM GMT). ABC reported the Senate is seeking a key test vote during the session on a bill to reopen the government.

A U.S. government shutdown entered its 40th day on Sunday, the country's longest ever such shutdown, as the Senate failed on several occasions to achieve consensus over a spending bill.

While Republicans hold a majority in the Senate, any bill to fund the government will require at least 10 Democrat votes to pass.

The suspension of government services sparked widespread disruptions across the country, especially in key sectors such as air travel. Several major airlines were seen cancelling flights over the past week amid shortages in air traffic controllers and transportation security administration staff.

Source: Investing.com