Yawn.
https://www.cnbc.com/2020/07/30/trump-suggests-delaying-election-amid-fraud-claims-but-has-no-power-to-do-so.html
Trump has no power to unilaterally delay elections, which were set for the day after the first Monday in November through a mid-19th century law passed by Congress. Since then, it has never changed, said presidential historian Michael Beschloss.
I'd put this fantasy right behind the "if Trump loses he'll refuse to vacate the White House on January 20" one.