There will be no debate. It will be extended until after the election. Democrats will try to make it a campaign issue, but since there will be no shutdown forcing attention, Republicans will just ignore it. Like they did up until the shutdown happened. People may be vaguely worried, but it won't be a thing that's happening now so they'll just assume something will be done, and the extension now will condition them to believe that.

If you think fighting about politics now is not important to the midterms, then demonstrating willingness to open the government and eliminating Republican taking points is also unimportant. However solidifying that Republicans are powerful and Democrats will always roll over is important. Not just for elections, but for standing up against fascism now.

Chuck Schumer is not and has not ever been an electoral genius.