"I'm feeling the same way; I wish we had a list of who IS supporting Christmas."
I know Tru-Value does but that is all I have noticed thus far!
In addition to boycotting certain stores which are anti-Christmas, you may want to avoid buying products promoted at this site:
http://www.buyblue.org/BlueChristmas
These are companies that donate very generously to the Democratic Party. This site even tells what percentage they give to each party. For instance, Progressive gives 97% to Democrats, and 13% to Republicans and others.
How nice of our "Blue" friends to give us this ready-made list for our "holiday" antishopping!