In the United States, Election Day is the annual day set by law for the general elections of federal public officials. It is statutorily set as "the Tuesday next after the first Monday in the month of November" equalling "the first Tuesday after November 1".[1] The earliest possible date is November 2, and the latest possible date is November 8.
election day - is set by Law - not the Constitution specifically - and since trump brought up the idea ( as I remember) to try to safeguard vulnerable folks from Wuhan virus, and not trusting ( justifiably) the DimLib mail-in vote ( for dimLib fraud) justifiably - the matter would have to go to Congress to change the date - and the DimLibs being DimLibs - automatically oppose anything Trump - it would not get through the House and Pelosi.
Dead issue.
Now - if Trump really wanted to delay the election - he should be advocating not changing the day/date - and pelosi and the House would happily be manipulated into doing just that out of Trump hate and TDS!