Frogprince,
if I saw that cartoon with no context whatsoever, I think I would be scratching my head wondering who drew it and what point they were trying to make.   
If I saw it in, say, The Oregonian (Portland's local newspaper, which liberals tend to think has a conservative bent and conservatives tend to say leans liberal), I honestly wouldn't be sure whether the cartoonist was pro or anti Obama.   
For me, without some context, I wouldn't know if it was making fun of the Obamas or of certain public perceptions of them.

But I say that as someone who supports the Democratic Party and Obama in this election.

If I were already inclined to distrust or dislike the Obamas and/or the Democrats, if I were buying into the "be afraid, be very afraid" meme that the Bush administration has been pushing since 2001, if I tended to view Islam as something to be feared, and/or if I had negative feelings towards blacks or mixed-race people, I think seeing that cartoon with no context would reinforce my pre-existing fears and attitudes.    It's hard to see how it would in any way allay my fears, distrust, or dislike of the Obamas.