Trump will lose in a landslide because of the economy, new election model predicts, page-3

They have a good track record on popular vote.

"The model has correctly predicted the popular vote in every election since 1948 other than 1968 and 1976 (although two candidates lost the popular vote but won the presidency in that span, including George W. Bush in 2000 and Donald Trump in 2016)."

Unfortunately, no one has as yet devised an accurate Electoral College predictor.

"Is it too early to predict the election?" - Yes.