Well, a poll doesn't *have* to be close. Also is it bad if people are engaged? I guess that heavily depends on your worldview :)
Right, and polling is designed (IMO) to perpetually make the race look close to keep people engaged.
Discussion
Engagement is good but deceptive polling can lead people to believe there's broad support for otherwise unpopular policies. IMO this is why people distrust polls, and thus the prediction markets struggle to predict the outcome with >X% certainty.