If I am a senator, I'm filibustering. Unless this is one of those "continuing resolutions" that is immune to the filibuster.

It's the reconciliation process that's exempted from the filibuster, and yes - that's what this is traveling under. So they don't need any Dem senate votes, and probably don't expect to get any.

The needle they have to thread is to satisfy the moderate "purple district" Reps and the handful of GOP Senators that don't favor Medicaid cuts, while also satisfying the Freedom Caucus spending cut hardliners who want to reduce spending by $1 trillion over the ten year budget horizon. Unsurprisingly, both of those factions want it to be the other faction that has to take the most bites out of the turd sandwich. Unfortunately for the Chip Roys of the House, there really isn't as strong of a Freedom Caucus hardline faction over on the Senate side (hence the weaker Senate instructions). The hardliner holdout that was just attempted (and caved) was an effort to get a -commitment from Thune and the Senate that they'll actually include some steep cuts in the final bill.