Don't Democrats do the same with songs by conservative leaning musicians?
I'm not familiar with any conservative-leaning musicians who have been used in such way.
That's more like it. 
They are a rare species, aren't they?
Lee Greenwood has been known to endorse conservative primary challangers. Charlie Daniels hangs out with Sean Hannity all the time, so he might be a conservative. Bono supported McCain but is fairly liberal on a number of issues like Gun Control. And then of course there is Hank Williams Jr.
