http://www.google.ca/trends/explore#q=obama,%20romney
Surprise, the incumbent president is far more popular than the challenger, in terms of historic searches. There's no mystery, this is somewhere between a fluff political piece and an advertisement for Google's new search tech.
Come on WSJ, you can do better.
edit: A bigger mystery; does anyone know why these searches are more popular in Africa than the United States? The top five countries for Obama searches are:
1) Burundi 2) Guinea 3) Rwanda 4) Sierra Leone 5) United States
Meanwhile, Romney is pretty much only relevant in the US.