Subliminal messages in adds for Bill Clinton/Al Gore 1992?

I saw an ad in my Honors NSL class that was for Bill Clinton and Al Gore when he was campaigning against George W. Bush and apparently it was a huge success. From our standpoint we can see the small quick light flashes of the screen that show words in between frames. The ad started out as a statement where he said things that were incorrect about George W. Bush Senior's comments, then inbetween the flashes in white lettering it said "Vote Bush/Gore 1992." I want to ask all of you to take a closer look at this, do you think that it could propell the watchers of the commercials in order to pay attention to certain aspects in which Bill Clinton wanted the voters to here? I'm sure the subliminal messages would appear to be completely unnoticable to the common eye.