Not to have opinion on direction or another (on german elections that is), but Bush is definetely not an angel.
His energy politics and lack of will to discuss common matters with other nations is outright irresponsible. He surely acts like sovereign leader of the world.

Counting on that others will just compromise.
Calling all who are not on his side terrorists and saying terrorists have no human rights.(what? are not human?) That isn't good way to make friends. US is as unpopular as it has ever been now here in finland...so no wonder if some german politics use these feelings to get votes.