After Democrats delivered a once-in-a-generation midterm thumping of Republicans in the United States midterms their current leader, Chuck Schumer, has expressed confidence he will helm his party’s larger-than-expected majority in the US Senate.

“I’ll be re-elected as majority leader,” the New York Democrat told reporters in Washington on Wednesday.

But as calls for change reached a fever pitch among voters in this week’s pivotal elections, not every newly elected Senate Democrat is open to the idea of having Schumer, a 75-year-old stalwart of the chamber, reprise his role as the head of their agenda.

At least seven incoming Democratic freshmen have publicly suggested – or said outright – they will not commit to supporting Schumer in next month’s leadership vote: Illinois Senator-elect Juliana Stratton through a spokesperson, said she will not support Schumer.

Kansas Senator-elect Adam Hamilton told CNN in September: “I’m not supporting Schumer”.

Maine Senator-elect Troy Jackson said on Monday he told Schumer he will “support somebody else”.

Michigan Senator-elect Abdul El-Sayed reiterated in an interview with CNN on Thursday that he will support his soon-to-be Democratic colleague, Senator Chris Van Hollen of Maryland, as leader. Peggy Flanagan told reporters on Wednesday, “It is time for new leadership”.

New Hampshire Senator-elect Chris Pappas said in an interview last week that “voters are hungry for … a new generation of leadership in the Senate”.

Texas Senator-elect James Talarico has called for “new blood” in Washington, and since being elected, has indicated he wanted to “hear about [Schumer’s] vision” for the Senate before committing to back him.

Jackson has openly questioned Schumer’s ability to connect with working-class voters, while Flanagan’s staff has said the senator-elect wants “a progressive champion” who will shepherd Democrats through the final two years of Donald Trump’s presidency and into 2028.

New members, like El-Sayed, may not be won over after Schumer backed the former public health official’s opponent, Haley Stevens, in Michigan’s Democratic primary.

Schumer, the first Jewish Senate leader, has often found himself at the centre of brewing cultural and foreign-policy debates within his party.

In remarks that were posted online in February, Schumer told Jewish leaders in New York City one of his core duties was “to fight for aid to Israel”.

“We delivered more security assistance to Israel, our ally, under my leadership than ever, ever before”, he said. “We will keep doing that.”Schumer has also faced fierce criticism for not doing enough to block Trump’s cabinet members from being confirmed. Some have even chastised the leader for retreating during last year’s government shutdown after he backed a Republican bill to reopen federal agencies without getting anything in return.

Critics in his party, including California Governor Gavin Newsom, called that a “capitulation” that abandoned key Democratic priorities, like healthcare subsidies. Michigan Congresswoman Rashida Tlaib said Schumer should have stepped down as leader over the matter.

The Democratic leader said on Wednesday the party’s new Senate plan would include launching investigations into the Trump administration, challenging the president’s agenda and ending his war in Iran.

However, that’s not good enough for some current members, like Van Hollen, who recently told Bloomberg that Democrats should not commit to Schumer without promises of a “bold agenda”.

Before Tuesday’s election, a senior campaign staff member for Senator Jon Ossoff, who was easily re-elected to his seat, would not say whether the Georgia Democrat would back Schumer.

“I do not have an answer,” the Ossoff source told Al Jazeera. “We can do all the fantasy football stuff later.”When Democratic lawmakers return to Washington next week, voters and Democratic-aligned groups will likely pressure them to support an alternative candidate.

After calling for new leadership after the election, Indivisible, a progressive US-based organisation that bills itself as a movement “to stop the rise of authoritarianism”, released a memo on Thursday detailing their opposition to Schumer.

Senator Chris Van Hollen, right, frequently mentioned as a possible candidate for Senate Democratic leader, speaks with Kilmar Abrego Garcia, a Salvadoran citizen who was living in Maryland and deported to El Salvador by the Trump administration, in San Salvador, El Salvador [File: Press Office Senator Van Hollen via AP]“Everyone with a Democratic senator – including those with newly-elected senators on their way to DC – should be demanding a contested leadership election, not a cleared field for Schumer”, the memo read.

“Any Democrat who is considering business as usual, or unwilling to fight at a level that matches the public’s demand for action – is not qualified to lead the party at this moment. Who leads the party in this era must be an open question, not a coronation. It’s time to define what the next era of the Democratic Party will be.”Al Jazeera asked Schumer’s office how he plans to address those concerns and whether he is speaking with frustrated Democrats, but it has not yet responded.

To be re-elected, Schumer needs a simple majority of the Democratic Senate caucus, projected to comprise 54-56 members, and Schumer, who previously served as majority leader during the duration of former President Biden’s term in office, still has allies he can count on.

One of those is Democratic Senator Cory Booker of New Jersey, who told ABC on Wednesday that he commended Schumer’s handling of the midterms, saying he delivered “one of the most historic sweeps” for the party.

“We’re gonna have a family discussion,” Booker said. “But I think America should give … Chuck Schumer his due for what we were able to achieve.”When asked Wednesday about building criticism of his leadership, Schumer demurred, saying Tuesday’s elections were “not about” him.

“This is about the American people and what they want and what they need and what we can do to help them. Plain and simple”.