Cal State Fullerton’s forecasting professor: Election too early to call

The presidential election prediction formula used by Chandrasekhar Putcha, Cal State Fullerton professor emeritus of civil and environmental engineering, is going to get a major workout this year.
Factor in COVID-19, election results not being clear on election night, and possible court battles, polling issues and fights over mail-in ballots and it looks like we might be in for another nail-biter.  For these reasons, plus whatever last-minute October surprises may await, Putcha is not willi