House TV show (on Fox) subtly endorsing Obama?

Watched one of my favorite shows last night, House.
In one scene "Thirteen" (a doctor in training with House who's struggling with her genetic potential to develop Huntington's Disease) is sitting in a bathroom stall wrestling with the life and death issues of a patient she knows personally, and with her own life and death issues.

Very visible, on the wall behind her, is a bumper sticker in red, white & blue saying:
               

VOTE FOR CHANGE 08

Of course this bumper sticker doesn't mention Obama directly, and both the Hillary campaign and the GOP are using the word change.  But "change" in this campaign is strongly associated with Obama.  So I can't help but wonder if this was a subtle endorsement of Obama by the writers/producers of the show, (and it's a very popular show) and also thumbing their nose at Fox (though, is Fox Broadcasting owned by the folks as Fox News?).
Maybe a neat little Hollywood plug for Obama, sort of like product placement?