Rep. Joe Kennedy Joseph (Joe) Patrick KennedyMassachusetts town clerk resigns after delays to primary vote count Bogeymen of the far left deserve a place in any Biden administration Hillicon Valley: Election officials prepare for new Russian interference battle | 'Markeyverse' of online fans helps take down a Kennedy | GOP senators unveil bill to update tech liability protections MORE III’s (D-Mass.) Senate campaign said the Democratic Senatorial Campaign Committee (DSCC) has prevented him from launching a group aimed at helping other Senate Democrats up for reelection.

Kennedy, who is locked in a contentious primary against sitting Sen. Ed Markey Edward (Ed) John MarkeyMassachusetts town clerk resigns after delays to primary vote count Bogeymen of the far left deserve a place in any Biden administration Senate Democrats urge Amazon to recall, stop sales of explosive products MORE (D-Mass.), planned to launch a joint committee to raise funds and support Democratic Senate candidates Sara Gideon in Maine, Jaime Harrison in South Carolina, Cal Cunningham in North Carolina and Barbara Bollier in Kansas.

The congressman’s campaign made the pitch to the candidates on Tuesday, according to the Boston Globe. The paper reported that the candidates were receptive to the plan but that the Kennedy campaign was later told by one of the Democratic campaigns that the DSCC, which is focused in part on defending incumbents, said that they could not team up with Kennedy in the proposed committee.

ADVERTISEMENT

The DSCC declined to comment.

The Hill has reached out to the four Democratic campaigns for comment.

“Congressman Kennedy will continue to support efforts across the country to flip the Senate so Democrats have the votes to pass everything from climate action to gun violence legislation in 2021,” Kennedy campaign spokeswoman Emily Kaufman said in a statement to the Globe.

The DSCC has gotten behind Markey’s reelection bid.

“We’ve endorsed him publicly. We will be there to work with him and his team to ensure that they have the resources they need to get his message out,” Sen. Catherine Cortez Masto Catherine Marie Cortez MastoVA problems raise worries about mail slowdown, prescriptions Cortez Masto touts mail-in voting in convention speech Vulnerable Senate Democrat urges unity: 'Not about what side of the aisle we're on' MORE (Nev.), the chairwoman of the DSCC, said last year, referring to Markey.

ADVERTISEMENT

Markey has also landed the endorsements of a number of other Senate Democrats, including Minority Leader Charles Schumer Chuck SchumerMcConnell accuses Democrats of sowing division by 'downplaying progress' on election security Warren, Schumer introduce plan for next president to cancel ,000 in student debt Schumer lashes out at Trump over 'blue states' remark: 'What a disgrace' MORE (D-N.Y.).

Kennedy also received endorsements from Democratic lawmakers: House Progressive Caucus Chairman Mark Pocan Mark William PocanClark rolls out endorsements in assistant Speaker race Hillicon Valley: Pentagon reaffirms decision to award JEDI contract to Microsoft | Schiff asks officials for briefing on election security threats Democrats explore new ways to resurrect election security briefings MORE (D-Wis.), civil rights icon Rep. John Lewis John LewisLWCF modernization: Restoring the promise Rep. Cedric Richmond set to join House Ways and Means Committee GOP ramps up attacks on Democrats over talk of nixing filibuster MORE (D-Ga.) and fourteen other House Democrats announced their support for Kennedy in January.

The congressman has pledged to bring generational change and a fresh perspective to the Senate as Washington remains divided on partisan lines. Kennedy has particularly focused on the issues of immigration and health care in the primary.

Markey, in turn, has touted his experience in Washington, pointing to a long list of achievements, including co-authoring the Green New Deal.