Former President Donald J. Trump and his running mate, Senator JD Vance of Ohio, escalated their false attacks about the security of the Pennsylvania elections on Thursday, ramping up baseless accusations about voter fraud that could erode confidence of the results in one of the most critical battleground states.
On Thursday Mr. Trump posted on his social media site that Pennsylvania was “cheating” and breaking the law. He called for prosecutions, though he made no specific allegations. Earlier in the day, Mr. Vance seized on deceptive posts online claiming that Democratic Party volunteers were impersonating election officials at polling sites.
