Surprising no one, Trump has made it official. It’s going to get ugly.
On BBC breaking news:
Donald Trump has suggested November's presidential election be postponed, saying increased postal voting could lead to fraud and inaccurate results.
What did Trump say?
In a series of tweets, Mr Trump said "universal mail-in voting" would make November's vote the "most inaccurate and fraudulent election in history" and a "great embarrassment to the USA".
"The [Democrats] talk of foreign influence in voting, but they know that Mail-In Voting is an easy way for foreign countries to enter the race," he said.
Mr Trump also said postal voting was "already proving to be a catastrophic disaster" in areas where it was being tried out.