as minority leader. he would not go there. he said i won't do hypotheticals. >> dana bash and now with more on what will likely problem to be a vicious fight for control of the u.s. senate, let's go back to wolf blitzer. wolf? >> thanks very much. john king has been studying what's going on in the senate. how realistic would it be for the republicans to gain that net six that they need to be the majority? >> jake is wise to use the word vicious. there is going to be so close and tight, some campaigns will get very ugly. senate 55-45 if you give the democrats two independents who vote with the democrats on that. here's what you get in 2014, 36 seats. three dozen seats up for grabs. if they've got a blue ring, they're an democratic seats. of these, 12, 13 rays are viewed as the most competitive. this is why it is possible. you have in west virginia jay rockefeller is retiring. republicans think given the state's history in recent years, they get that one. south dakota, again a state