BISMARCK, N.D. (AP) — The first debate between Sen. Heidi Heitkamp and Republican challenger Kevin Cramer comes as Heitkamp is under heavy pressure in a race Democrats badly need for any shot at controlling the Senate. And it comes right after a major self-inflicted wound by Heitkamp's campaign, with the senator apologizing this week for a newspaper ad attacking Cramer that improperly identified some survivors of domestic violence and sexual assault. Heitkamp was already seen as one of the most vulnerable members of the Senate.Read more on NewsOK.com