…call them to voice support for the Affordable Care Act (see this useful NYT piece).  It's clear that a good number of Republican Senators are getting cold feet about the disaster they're about to unleash if they cut the funding for the ACA (which they can do with a bare majority) but leave the regulations in place (e.g., the prohibition on denying coverage due to pre-existing conditions).   Phone calls have much more impact than any other form of communication with these ding-dongs!