I honestly don't think they do. That's the same threshold as a veto override, which they no longer have to worry about (unless they go really off the rails). Trying to get to that threshold means compromising with other members of the Democratic caucus to water it way down. Waldstreicher's arguments are 100% emotion-based with some cherry-picked factoids sprinkled on top. I don't think he'd be interested in compromising with even his own party.In which they likely have that 60%!?
From what I saw, there was only one Democrat in the hearing really supporting the bill (other than Waldstreicher). And even that was only with a single softball question to the sponsor panel. Beyond that, you had Democratic senators James clearly against it and Sydnor asking some interesting questions that made him seem more on the fence (I'm guessing he's not happy about Bruen, but not looking to tilt at windmills).
On a 7-3 committee it's very possible the vote ends up 5-5 or better in our favor. We're presumably starting at 4 against and I'm thinking Smith and/or Sydnor don't get on board with SB1. So with perhaps a bit of luck it doesn't even make it to the floor in the first place.
But that's just my take, very well could be wrong. But I'm a bit optimistic about it after yesterday.