How Can Intense Media Coverage Play a Negative Role for a Candidate

How can intense media coverage play a negative role for a candidate as evident in Governor Rick Perry's poor performance in the 2012 Republican presidential primaries?

A) A bad televised public debate performance by a candidate can overshadow everything else.
B) Candidates who fail to raise money aggressively are marginalized by the media.
C) If a candidate is unwilling to be interviewed constantly, the media will marginalize them.
D) If a candidate has a negative personality, this will be taken advantage of by the media repeatedly.
E) A candidate who is initially unwilling to meet with the media is not afforded the chance again.