The Spanish election result was probably crucially affected by the transparent efforts by the outgoing government to fool people that the bombing had been done by ETA, which in the circumstances of Spanish politics, would have helped them get votes. And it was such a cynical attempt in face of an apalling tragedy that it just sickened people, in a relatvely politcally aware elefctorate.

It may be a false impression, but the impression I have always got is that American voters aren't likely to think in very subtle terms. "That's an attack on America - all true Americans will stand behind the President!"