Opinion | How do we know Trump’s election fraud claims are bogus? Take a look at Pennsylvania.

There’s no indication that fraudulent mail-balloting raised turnout, either. The share of total votes cast by mail varied widely by county. Almost half of Philadelphia’s ballots were cast by mail, whereas in rural Fulton County, only 15.2 percent were cast by mail, the lowest in the state. And contrary to Trump’s fraud theory, counties that had larger shares of mailed ballots did not always have larger changes in eligible voter turnout. In fact, three counties with some of the lowest rates of mail balloting — Potter, Jefferson and Bedford — were among the top 10 in terms of an increase in turnout among eligible voters. Meanwhile, two big mail-voting counties — Centre and Philadelphia — were in the bottom 10 for turnout increase.