I thought he said it here, but I have probably imgined that. Sorry, my mistake!
He doesn't talk politics in that video, but it's one I never saw before, so thanks for posting it. In the 2008 interview I quoted from above, he states that he is not pro-Democrat, only anti-Republican, so saying one of his hobbies is "to support The Democrats" may represent a change of heart or a true motivation to defeat the Republicans by supporting a party he doesn't necessarily like (as many voters do). But I don't doubt he said it, it fits with what I know about him. I'd still like to read the exact quote, if anyone can find it. A Google search was not helpful. Not to go too off-topic, but in the video linked to above, he says he "would like to read European stories translated into English" and he is seen drawing on a blank IDW Uncle Scrooge cover, so has he ever commented on the IDW Disney comics?
I asked him on his german tour last october, and he told me, that he is not interested in italian comics, but he only reads barks' comic's. Then he asked me, wether these european stories are good or bad, and I told him I love them. He said that meybe he would buy one of the issues one day.