"There is a natural human tendency to believe that any major development, no matter how long before an election, will be the last important influence on said election. This theory is fine in the last days before an election, but with almost a year to go, it is pretty unlikely that the national political situation will suddenly become static for well over 300 days." (Charlie Cook)
Anyone that tells you they know for certain what the outcome of the 2014 election is going to be is simply engaging in wishful thinking...