I have a bridge to sell you if you believe that.
It’s really not that out of line given his nationwide numbers.
His national number is 44% approval, 2 points less than his 46% vote share when he won WV with 68% of the vote.
I'm not saying Manchin isn't currently ahead, but it's pretty obvious that his lead is way inflated in this poll due to an overly Democratic (real Democratic, not fake Dixiecratic) sample.
Trum will not win 68% of the vote in WV again even if he wins the national popular vote because that number was inflated by voters there voting to repudiate the Obama Presidency.
In 2020 I believe : WY, ID , OK and maybe UT will vote for Trump by larger margins than WV