HARRISBURG, Pa. (AP) — President Donald Trump’s campaign is withdrawing a central request in its lawsuit seeking to stop the certification of the election results in Pennsylvania, where Democrat Joe Biden beat Trump to capture the state and help win the White House.

Ahead of a Tuesday hearing in the case, Trump’s campaign dropped its request in the lawsuit that hundreds of thousands of mail-in and absentee ballots — 682,479, to be precise — be thrown out because they were processed without its representatives able to watch.

The campaign's revised lawsuit, filed in federal court on Sunday, maintains the aim of blocking Pennsylvania from certifying a victory for Biden in the state, and it maintains its claim that Democratic voters were treated more favorably than Republican voters.

Meanwhile, the Trump campaign switched up its lawyers in the case Monday evening. Exiting is Linda Kerns, a Philadelphia lawyer who has handled a number of lawsuits for the campaign. Replacing her is Marc Scaringi, a Harrisburg-area lawyer who volunteered on Trump's 2016 campaign, is a conservative activist who hosts a radio talk show and ran unsuccessfully for the U.S. Senate in 2012.

The campaign still contends in the lawsuit that hundreds of thousands of ballots weren't properly processed.

“Our lawsuit in Pennsylvania absolutely still makes an issue of the 682,479 mail-in and absentee ballots that were counted in secret,” Trump campaign spokesman Tim Murtaugh tweeted.

The campaign said in a statement Monday that it “strategically decided to restructure its lawsuit to rely on claims of violations of the Equal Protection Clause of the 14th Amendment to the U.S. Constitution.”

The Trump campaign isn't making that claim on the hundreds of thousands of mail-in and absentee ballots, however. Instead, in the revised suit, it targets the practice of giving voters an opportunity to fix mail-in ballots that were going to be disqualified for a technicality. It contends some Democratic-run counties allowed voters to do that, while Republican counties did not, arguing Democratic voters were treated more favorably than Republican voters.

The Associated Press on Nov. 7 called the presidential contest for Biden after determining that the remaining ballots left to be counted in Pennsylvania would not allow Trump to catch up. Trump has refused to concede.

The lawsuit charges that “Democratic-heavy counties” violated the law by identifying mail-in ballots before Election Day that had defects — such as lacking an inner “secrecy envelope” or lacking a voter’s signature on the outside envelope — so that the voter could fix it and ensure that the vote would count, called “curing.”

Republican-heavy counties “followed the law and did not provide a notice and cure process, disenfranchising many,” the lawsuit said.

Cliff Levine, a lawyer representing the Democratic National Committee, which is seeking to intervene, said it's unclear how many voters were given the chance to fix their ballot and that there is nothing illegal about it.

But, he said, it is minimal and certainly fewer than the margin — almost 70,000 — that separates Biden and Trump.

“The numbers aren't even close to the margin between the two candidates, not even close,” Levine said.

In any case, there is no provision in state law preventing counties from helping voters to fix a ballot that contains a technical deficiency. Levine said the lawsuit does not contain any allegation that somebody voted illegally.

“They really should be suing the counties that didn’t allow (voters) to make corrections,” Levine said. “The goal should be making sure every vote counts.”

Pennsylvania's top election official, Secretary of State Kathy Boockvar, a Democrat, responded in court on Sunday, asking the judge to dismiss the case. State courts are the proper jurisdiction for the subject, and the lawsuit contains no “plausible claim for relief on any legal theory,” the state's lawyers wrote.

More than 2.6 million mail-in ballots were reported received by counties, and there has been no report by state or county election officials or a prosecutor of fraud or any other problem with the accuracy of the count.

A key theme of Trump and his supporters has been their claim that Philadelphia — a Democratic bastion where Trump lost badly — had not allowed Trump's campaign representatives to watch mail-in and absentee ballots processed and tabulated.

However, Republican lawyers have acknowledged in a separate federal court proceeding that they had certified observers watching mail-in ballots being processed in Philadelphia. Gov. Tom Wolf's administration has said that ballot watchers from all parties had observers throughout the process and that “any insinuation otherwise is a lie.”

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Follow Marc Levy on Twitter at www.twitter.com/timelywriter.