Sadly you’re correct. They have the votes.
For what? They may very well pass a resolution to "keep on keeping on" about this and declare victory, quietly folding their tents and slinking off into the night.
Keep in mind with enough outrage, and I believe the outrage is both real and HUGE, anything they pass CAN be overturned when the majorities change as they certainly will at some point.
I don't profess to be a prescient being but know this, the very definition of a politician is to be self serving and work 24/7 to get re elected. What's Reid going to promise or threaten them with if their own polls and constituency responses are if they vote for a certain bill they will be tossed out?
You also said "you don't know how the Senate works"
Really? Ok, so tell me, how does it work?