Reuters Twitter has added fact-checking links to President Trump's misleading tweets about mail-in voting. Trump falsely claimed on Tuesday that mail-in ballots cast in California will be "substantially fraudulent" and result in a "Rigged Election." Twitter later added a link to each of Trump's tweets on Tuesday prompting users to "get the facts about mail-in ballots." Clicking on the link takes users to a Twitter "Moments" page which includes a section titled, "What you need to know." The section summarizes Trump's claims and points out that fact-checkers say there is no evidence that mail-in ballots are linked to voter fraud, that only registered voters receive ballots, and that multiple states in addition to California use mail-in ballots. Visit Business Insider's homepage for more stories. Twitter has added a fact-checking link to President Donald Trump's misleading tweets about mail-in voting. "There is NO WAY (ZERO!) that Mail-In Ballots will be anything less than substantially fraudulent," Trump tweeted early Tuesday.