I question your methodology, to be honest. Starting with such loaded search terms is the opposite of the scientific method, since you haven't established any kind of neutral baseline. Picking candidates' names is also problematic, since (as pointed out by numerous people) Obama has been President for a long tome whereas Romney has only been the Republican nominee for 7-8 months. It would have been more rational to start with, say, Democrat and Republican which are comparatively 'timeless' terms. Also, I don't see any indication that you attempted to offset bias in your sample set.
I don't mind it as a bit of election-related marketing, but it doesn't strike me as very rigorous.
I don't mind it as a bit of election-related marketing, but it doesn't strike me as very rigorous.