[758][759] His attacks on mail-in ballots and other election practices served to weaken public faith in the integrity of the 2020 presidential election,[760][761] while his disinformation about the pandemic delayed and weakened the national response to it.[459][758]
James Pfiffner, professor of policy and government at George Mason University, wrote in 2019 that Trump lies differently from previous presidents, because he offers "egregious false statements that are demonstrably contrary to well-known facts"; these lies are the "most important" of all Trump lies. By calling facts into question, people will be unable to properly evaluate their government, with beliefs or policy irrationally settled by "political power"; this erodes liberal democracy, wrote Pfiffner.