Part 1 of 11. Keith Olbermann hosts the Democratic Presidential Candidates' debate in Iowa, 8/7/07 Candidates speaking in this portion of the debate are Dodd, Clinton, Obama, Biden and Edwards. Transcript of this portion: OLBERMANN: In this first round, initial responses for all of you, please, will be limited to 90 second, follow-up answers to 30 seconds. These formalities out of the way, the lucky recipient of our first question has been determined by lottery. Senator Dodd, that would be you. Obviously, in the light of what happened in Minnesota last week, maintaining infrastructure requires spending. And how tax dollars are spent is a matter of priorities. What should we not build? What should we not be funding to see to it that our highways and our bridges and our tunnels and our mines are all properly maintained? DODD: Well, thank you, first of all, and thank you for the warm welcome this evening. I'm a union guy, proud to be a union man, and thank you for inviting...