President Trump’s campaign in the crucial battleground of Pennsylvania is pursuing a three-pronged strategy that would effectively suppress mail-in votes in the state, moving to stop the counting of absentee votes before Election Day, pushing to limit how late mail-in ballots can be accepted and intimidating Pennsylvanians trying to vote early…

The Trump campaign’s on-the-ground efforts in Philadelphia have already drawn a rebuke from the state attorney general, who warned that the campaign’s foot soldiers risked being charged with voter intimidation. But the Trump campaign has defied local leaders and is running a similar operation in Delaware County, one of the suburban “collar” counties around Philadelphia that have become increasingly Democratic since the 2016 election.

The campaign’s strategy is backed up by public statements from the president, who barnstormed the state on Monday and repeatedly made false claims about the security of voting in Pennsylvania along with ominous warnings…

Some residents have been left bewildered by the Trump campaign’s attention this year. During the primary election over the summer, Adam S. Goodman, an insurance lawyer, posted a photo on Instagram in which he proudly held up two mail-in ballots outside a drop box. He soon found that the picture had been included in litigation the Trump campaign filed against the city. The campaign used the photo of Mr. Goodman along with other photos to say that some voters were dropping off more than one ballot at drop boxes.