According to a June 17-20 Morning Consult survey, 40% of voters now view Musk favorably, down 5 percentage points since an April 15-17 survey, while an identical share view him unfavorably, up 13 points over the same period.

The public’s recent souring on Musk comes after surveys conducted in November, February and April found views about the Tesla Inc. and SpaceX chief executive were mostly static.

While negative views of the multibillionaire have increased across the political spectrum, the swing has been most dramatic among Democratic voters, 59% of whom now view him unfavorably, compared with 37% two months ago.