Not only is the "prolonged" primary getting people involved across the country who were formerly written off as "irrelevant" - which can only do good for the democracy all down the road - it's also, IMO, beneficial to Dems (contrary to the CW) because the rightwing doesn't have a single target to fix on so they can't coordinate their smears and ratfucking campaigns. Their efforts MUST be divided, all the way up to Denver. They are going to have to work harder/faster and with much less freedom to maneuver, because the nation will have had sooooo much more exposure to both D candidates that "no, listen to us, this is the REAL [nominee]" is going to be harder to do after voters have had so much time to watch them going flat out down the track to the home stretch...