Is ALPA shrinking? Is that why they want SkyWest (and anybody else) so bad?

ALPA lost the Colgan vote recently, and has lost the SkyWest vote in the past. American, Southwest and UPS pilots are all represented by non-ALPA unions. I believe Fedex dropped ALPA at one point, and then voted them back in, is that right?

What about the US Airways pilots (2800 of them) that have started an effort to decertify ALPA (http://usairlinepilots.org/),

Also United pilots (http://www.pearlgroup.org/).

ASA and Comair pilots have combined to help fight ALPA (http://www.rjdefense.com/) (don't know many details on this one)

Any other groups actively trying to NOT be part of ALPA ?