Big deal, this is probably standard preperation for any candidate for president.
Here’s the problem I see. There is such an expectation of winning among the Dems (check out DU if you doubt that), if he loses there will be crying and “gnashing of teeth.” They will be convinced that the election was “stolen” once again, and these fans are so rabid there’s no telling what will go down.
I think they usually at least wait until they're nominated. Talk about counting your chickens...and this with the wily Hillary laying in the weeds...