He seems stuck at 41-42%, no matter who he runs against.

Our new national poll finds no matter what Dem you test against Trump, he is stuck at 41-42%

Biden 53 Trump 41
Sanders 51 Trump 41
Harris 48 Trump 41
O'Rourke 47 Trump 41
Warren 48 Trump 42
Booker 47 Trump 42
Gillibrand 47 Trump 42:https://t.co/3qotAuZKDj

— PublicPolicyPolling (@ppppolls) January 22, 2019