That's great, but it's very hard not to suspect a politician to accept bitcoins only because it would be soooo easy to hide some of the donations.
At some point if politicians start to accept bitcoins, they would have to make an official declaration about their receiving bitcoin addresses and electoral authorities would invite the public to consult this list before making any donation. If a politician were to request donations on his website with a different bitcoin address, this would be considered as fraud.