“I feel that Vice President Harris herself personifies the necessity for voting rights to be prolonged,” the Rev. Al Sharpton, who attended the speech in Tulsa, mentioned in an interview. “When she’s on the cellphone or walks into an workplace, we’re trying on the purpose we’d like voting rights.”

Michael Waldman, the president of the Brennan Middle for Justice on the New York College Faculty of Regulation, mentioned that the choice to raise Ms. Harris because the face of the administration’s work on the difficulty was a pivotal second for the Biden White Home given the variety of voter suppression efforts that had been shifting ahead — 389 bills in 48 states and counting, in response to a tracker maintained the Brennan Middle.

“It has been a long time since a Democratic White Home has made voting rights and democracy reform a central purpose,” Mr. Waldman mentioned, however he added, “the clock is ticking.”

Ms. Harris’s impression on the hand-to-hand politics of the Senate is predicted to be restricted, however she usually drew consideration to voting rights throughout her 4 years as a senator. Throughout her final 12 months within the Senate, Ms. Harris introduced legislation that might increase election safety measures, require every state to have early in-person voting intervals and permit for an growth of mail-in absentee ballots.

In 2020, Ms. Harris was additionally a co-sponsor of the John Lewis Voting Rights Act, which might restore a chunk of the Voting Rights Act of 1965 that relied on a formulation to determine states with a historical past of discrimination and require that these jurisdictions clear any modifications to their voting processes with the federal authorities. The protections were eliminated by the Supreme Court in 2013.

Nonetheless, Ms. Harris, who spent a bit of her time within the Senate working for president, was not identified for constructing particularly shut relationships with colleagues, and Mr. Manchin and Ms. Sinema aren’t any exceptions.

A number of Democratic aides who work intently with the senators scoffed on Wednesday at the concept Ms. Harris, referred to as a staunch liberal, can be the one to steer both reasonable lawmaker to alter the filibuster rule. Neither is Ms. Harris a possible candidate to dealer the type of compromise on the substance of the invoice wanted to steer Mr. Manchin, the one Democrat who has not sponsored it, to again it.