Trump has questioned the integrity of the congressional midterm elections, highlighting discrepancies between voting results and pre-election polls and the role of voting machines.
"Does anyone really believe that these 'elections' were fair? How could the polls be so wrong? ", he wrote on the Social Truth website.
Some groups of early voters were so large that it was impossible to win, regardless of turnout, he said. However, Trump did not specify which cases he was talking about.