At least other GOP senators have contributed (and one RAT, Wyden). I don’t know what, if anything, they’ve planned on this, but it is possible for Paul to yield the floor to say, Ted Cruz and let him continue it. The risk is the next guy would then have the right to end it. It’s unclear what, if anything, is Paul’s long term strategy for this. But it was fun watching Harry Reid rebuffed in his private fiefdom.
If they want to stretch this out they need, to counter predictable media responses, to add Tim Scott to the rotation. I’d also suggest adding Deb Fisher and maybe Kelly Ayote (IF they’re convinced she’d play ball.) Don’t let it all be fairly white guys (media would ignore Rubio and Cruz’s Hispanic roots but Scott and the ladies would be harder to ignore.)