"In previous posts, we have seen why national primary polls need to be viewed with skepticism. With few people paying attention early on, name recognition becomes a bigger factor than it will be on voting day. National primary polls also fail to account for the impact that winning (or losing) early states has on the candidates' support. But national primary polls can be useful in comparing apples to apples: If two candidates both have high name recognition, the one leading in the poll is probably in a stronger position. The same is true for comparing two candidates who lack name...