He's right. I think.
Michael Kinsley on the logical contortions that drive the WWOVF? debate (Who Would Osama Vote For?):

Deputy Secretary of State Richard Armitage said recently that terrorists in Iraq "are trying to influence the election against President Bush." In saying so, Armitage is trying to influence the election in favor of President Bush. But he has no evidence other than these actions. And if their very actions send a clear message that they are trying to defeat President Bush, then the effect of those actions will be to help President Bush. So even if Armitage is right, he's wrong.