Please do answer on your party lines. with the way the democratic nominations are going with the loss?

of Gore in 2000 and Kerry in 2004 and their canditates bickering like childeren. with the decision to not let Michigan and Florida have any say in the delegate vote how much longer will the democratic party stay alive and part of the election process? I am not saying that it will be gone tomorrow but say in 15-20 years will we still have the same two partys? please give honest answeres not answeres based on your political views towards the current canidates thank you