When you have a dense electorate and when you're up against media propaganda you can't use the same flat footed consultants to run a traditional campaign.
You have to speak the truth and energize your grass roots support.
But FUR SHUR you don't go campaigning for undecided voters in the middle ~ because they don't exist ~ there being no middle for one thing, but also by the time we get around to a Presidential race, everybody is decided on which candidate they like ~ the only remaining decision is whether to vote or not vote.
You really need to campaign to your base ~ to get them out.