Although to be more accurate the term is usually "low-information voter."

"Low-information signaling referred to cues or heuristics used by voters, in lieu of substantial information, to determine who to vote for. Examples include voters liking Bill Clinton for eating at McDonald's, and perceiving John Kerry as elitist for saying wind-surfing was his favorite sport."

(Link to original TIME article Wikipedia got the quote from)

The Obama campaign specifically targeted these people:

The answers led to advertising purchases that the campaign might not have made, especially as it pursued undecided voters who did not regularly go to traditional sources for news.

So it was, said Jim Margolis, a senior advertising strategist, that the campaign bought more late-night advertising time than it otherwise would have on “Late Night With Jimmy Fallon,” “Jimmy Kimmel Live,” ESPN and, most surprisingly, TV Land, the basic cable network devoted to reruns of old programs.

In the case of TV Land, Mr. Margolis said, the campaign was seeking to reach “folks who may not be as political, may not be deciding until later.”

“A lot of these people are lower-information voters,” he said, “not necessarily tuned to politics and watching a little more programming that is out of the main lane of what most of us think of.”

But then, you didn't know this, did you?