> i take it from the lack of response that there is no actual group or effort
> to start something -- concerted political action to ensure that we get
> single payer?
There are a couple:
Healthcare-NOW! http://www.healthcare-now.org
Physicians for a National Health Program http://www.pnhp.org
PNHP has a fairly comprehensive list of organizations supporting the idea:
http://www.pnhp.org/links/organizations_endorsing_singlepayer.php