It's May 1, now 18 months from the next election.
Is it too early to care?
Doubtful, but the final reason of this column shows present coverage may have an impact.
Sixth, these races are susceptible to last-minute, event-based swings—the financial crisis in 2008, the James Comey statements about Hillary Clinton in 2016—that are impossible to predict this far in advance. These swings could work in favor of Trump or against him. It's hard, though, to imagine Trump getting worse press coverage than he already has, so late surprises could well hurt his Democratic challenger.