Not so long ago, if there was a bipartisan group getting together to solve a problem in the Senate, you could count on Mark Warner to be involved. The Virginia Democrat was part of the “talking stick” gang that helped quickly end a brief 2018 funding lapse. He was a part of a crew that helped cut a major infrastructure deal under former President Joe Biden, and he’s currently working with Republicans to forge an agreement on cryptocurrency regulation.

But as his colleagues hunt for a way out of the 31-day-and-counting government shutdown, Warner this time is hanging on the sidelines. It’s a twist not only because of Warner’s history as a card-carrying bipartisan “gang” member who would frequently host gatherings at his Old Town Alexandria home. It’s also because of who he represents: His home state has the third-highest number of civilian government workers, plus tens of thousands more in military uniforms. Lawmakers from the Washington area have historically been voices of moderation urging both parties to avoid brinkmanship that could harm the federal workforce.

Yet as the shutdown’s toll has mounted, Warner and his home-state teammate, Democratic Sen. Tim Kaine, have stuck closely to their party’s line — sounding the alarm over the impending expiration of key federal health insurance subsidies and blaming the impending lapse of nutrition assistance on Republicans.

“He's always been one of those guys who says, ‘I'll be part of any gang,’ the sort of ultimate bipartisan leader,” said Rep. Don Beyer (D-Va.). "I think he's just really frustrated and unhappy with the situation, the shutdown, with what's happening to Virginians. … I think it just pisses him off.”

In Warner’s estimation, what sets this shutdown apart is his belief that it won’t be solved by a Senate gang, but by one person: President Donald Trump.

Warner publicly aired his concerns this week when he gabbed to reporters alongside Sen. Lisa Murkowski (R-Alaska), another bipartisan gang regular who has been involved in the current rank-and-file talks.

After she mentioned the virtues of cross-aisle conversations and the importance of trust, Warner said while Murkowski might feel free to negotiate without Trump’s blessing, “some of the others would have to get a permission slip.”

“I really do think, unlike in the past, you’ve probably got to get the president deeply engaged,” he added.

Warner’s office declined a request for an extended interview. But he confirmed in a brief exchange Thursday that he has not joined the pending shutdown talks — pointing to both his belief that Trump is the key player in ending the stalemate as well as his focus on helping land a cryptocurrency deal.

But there’s also a larger backdrop to Warner’s withdrawal — how the Senate’s partisan fault lines have hardened during the second Trump presidency.

Senate Republicans have repeatedly sidelined Democrats this year at major points, passing a sweeping domestic policy bill along party lines this summer that also included a debt ceiling hike — sidestepping a default cliff that has previously forced bipartisan compromise.

In March, Republicans drafted a stopgap funding bill on their own and then essentially dared Democrats to shut down the government. Senate Minority Leader Chuck Schumer flinched then, but one big hint that Democrats wouldn’t be up for a repeat was that Warner did not join him at that time in helping to advance the shutdown-averting legislation. In a statement with Kaine, Warner explained that the stopgap gave a “blank check to Donald Trump and Elon Musk to continue attacking the federal workforce.”

Now he’s repeatedly voted against the latest House-passed spending patch, which would fund the government until Nov. 21. Warner has backup from fellow Virginia Democrats, who say Trump’s willingness to take a sledgehammer to the federal government this year is affecting what they are hearing back home.

“They’re viewing the shutdown sort of as a continuity of the Donald Trump