Don’t pay attention to any poll that just polls “registered voters” and not “likely voters”. They don’t mean anything.
That's not exactly accurate when you're still 4 months out.
Those voters, since they are already REGISTERED to vote, simply have to be motivated enough to go to the polls.
Likely voters are a far more accurate measure when you get close to the actual election. After the conventions, likely voters is the only survey worth listening to. 4 months prior, there are still many people who simply aren't interested yet.