True..politicians don't have a right of equally balanced positive and negative coverage... but what about the public? Shouldn't the positive be reported with just as much fanfare, luster, and fervor as the negative. 
Ideally reporters as well as the media should be balanced and unbiased. Finding a media outlet that adheres to a balanced, unbiased approach is like finding a needle in a haystack...and many media outlets could care less about their biases when delivering/reporting "news".