Yes and no. Yes because it's obvious his advantages with Hispanics (including Puerto Ricans) in a state where Democrats need Hispanics to win statewide make him tough to beat, no because Flawless Beautiful Marco
is somebody who worries me in 2020 and knocking him out now would be crucial for the future of the Democratic party.
Then again, I'm sure the DSCC and the PACs both know something we don't. It may be close, but the last 2-3% is too tough of a nut to crack to get Murphy over the hump when there are easier flips elsewhere (i.e. Kander in MO and Ross in NC)