BLITZER: We're watching the breaking news of a possible, repeat possible, Ebola case in New York City. You're looking at live pictures outside of Bellevue Hospital in New York. A physician from Doctors Without Borders is there. They're tested to see if he contracted Ebola. Much more coming up on this story. There's the picture of the patient right there, Craig Spencer. I'm here, by the way, in New Hampshire. Later tonight, I'll be moderating a CNN debate that could be crucial in deciding which party wins control of the United States Senate. A new CNN Opinion Research Poll shows the race is extremely tight. Democratic Senator Jeanne Shaheen leads Republican Scott Brown by two points, 49-47 percent among likely voters. A statistical tie after the margin of error is included. Our chief congressional correspondent Dana Bash is here with me. Set the scene, Dana, for this debate because lots is at stake.</s>DANA BASH, CNN CHIEF CONGRESSIONAL CORRESPONDENT: Well, you just showed it. The fact that it is neck and neck here. Just a couple of months ago Scott Brown was trailing by double digits. And really the number one reason according to sources in both parties is the president. I mean, we hear about the fact that he's a drag on a lot of the Democratic candidates, but nobody apparently is as hurt more than Jeanne Shaheen, the Democratic incumbent here, because his popularity has plummeted unbelievably. He just won two years ago by six points, now in our new poll, it's under 30. So that's going to be the key. I'm sure you're going to hear a lot of trying to link Jeanne Shaheen to President Obama from Scott Brown tonight.</s>BLITZER: I'm going to get ready to moderate this debate. It will air on</s>CNN 11: 00 p.m. Eastern later tonight. Coming up here in THE SITUATION ROOM, much more of the breaking news of an Ebola scare in New York City. A doctor recently back from West Africa, now in isolation while being tested for the deadly disease.
Debate in Crucial Senate Race