I was supporting John Edwards for the Democratic nomination for President. One big reason was he was the candidate who most frequently talked about global warming, often without any prompting from the audience. His website has the image on the right on his front page.
Now that he's suspended his campaign, its more important than ever for reporters to keep candidates feet to the fire and ask them what they're plans are to solve the climate/energy problem. The Sierra Club has joined the League of Conservation Voters in their petition drive to get reporters to pay attention to this issue. It's not just Sunday morning talk show hosts who need to be asking this question but also debate moderators and the reporters following each candidate.
Updated: Al Gore's Alliance for Climate Protection has a separate petition aimed more broadly at "members of the press".