However election specialists nonetheless expressed worries concerning the quantity of private data being requested and the safety dangers, each to voters and to the electoral course of, that might include such a switch of data. Such dangers have grown increasingly common in partisan election evaluations across the nation.

“That’s a very unhealthy concept to have non-public data floating round in a Senate caucus,” mentioned Marian Okay. Schneider, an elections lawyer for the A.C.L.U. of Pennsylvania. “And it’s actually not clear how the info goes for use, who’s going to be it, who can have entry, the way it’s going to be secured. And it’s unclear to me why they even want the personally figuring out data.”

Republicans in a number of states have pursued comparable evaluations — misleadingly labeled “audits” to recommend an authoritative nonpartisan investigation — within the title of defending “election integrity.” The evaluations have typically centered on baseless claims and debunked conspiracy theories concerning the presidential contest, spurred partially by the falsehoods promoted by former President Donald J. Trump and his allies.

President Biden gained Pennsylvania by more than 80,000 votes, and the outcomes have been reaffirmed by the state’s Division of State.

“The whole lot of our proceedings at present, issuing subpoenas, relies upon such a noncredible basis,” mentioned Anthony H. Williams, a Democratic state senator who represents an space close to Philadelphia. He added that it was “very troubling and, the truth is, leads us to darker days on this nation, akin to when hearings like these, in the course of the McCarthy period, have been held, the place voices have been silenced and liberties have been denied, being bullied by the facility of the federal government.”

State Senator Jake Corman, the highest Republican within the chamber, who authorized the evaluation final month, portrayed the investigation as merely making an attempt to tell future laws and lashed again at Democrats, asking what they have been “petrified of.”

“All we’re doing is searching for info, searching for data, in order that we are able to make higher public coverage,” Mr. Corman mentioned.