PolitiFact staffers research statements made by elected officials, candidates, leaders of political parties and political activists, and rate their accuracy on the Truth-O-Meter, from True to False. The most ridiculous falsehoods get the lowest rating, Pants on Fire. They “examine officials at all levels of government, from county commissioners to U.S. senators, from city council members to the president.”
"PolitiFact is a fact-checking website that rates the accuracy of claims by elected officials and others who speak up in American politics. PolitiFact is run by editors and reporters from the Tampa Bay Times, an independent newspaper in Florida."