“Uncertain voters” appears to be the precursor story to every major national election. It is now a meme. If someone is still uncertain as to what is happening to this county, they should remain uncertain and not vote.
Agreed, however...
Of two major parties, one party is more likely to promote that paradigm; the other more likely to take advantage of it by identifying those uncertain, convince them that they are completely certain (for that party) based on a few words, an emotion, an emblem, a word (ie, Forward), etc.