I was thinking about this very question the other day. Candidates and their campaigns are constantly telling us that a bumper sticker or sign is just as important as a monetary donation to their campaign. My question is do these stickers and signs make a difference? Are we going to convert or cause someone to come over to our side just because we have a bumper sticker on our car, or a sign in our front yard? I do not know the answer, but my gut feeling is probably not. I think the campaigns and candidates are not so much longer for that one convert, but they are seeking to influence an area or community by overwhelming the area with their presence. Most of the people who sem to tune into elections a few days before are the targets of the stickers and signs. Just think of the guy or gal who is too busy to pay attention now, but decides to focus on the election a day or two before the vote and sees nothing one candidate's signs and stickers. That person is proably apt to vote for that candidate or may just decide to stay home feeling that their candidate really doesn't stand a chance.
I final word on this issue is that signs and stickers do matter for the simple fact that if a candidate is able to overwhelm an area with signs and bumper stickers, that candidate may actually succeed in causing his opponent's supporters in throwing the towel and staying home feeling that all is lost this go round.