We shall see. If she wins the primaries, there is very little they can do. If it comes down to supporting Hillary versus a Rep, the publications [I presume you mean the MSM] will support Hillary.
They have valuable lessons in Gore and Kerry.
Gore won the popular vote and many Dems still cling to the fiction that SCOTUS and the GOP stole the election from them.
As far as Kerry is concerned, the Dems voted for him vice Dean because they thought he was electable. Kerry came close. He received 9 million votes more than Gore and the second most for any Presidential candidate in American history. He lost the electoral vote narrowly. Again the Dems thought that the GOP stole the election in Ohio through fraud.
I think the many of Hillary's possible Dem opponents are part of the cabal against her along with the DNC. She is the front runner and they are, with the help of the MSM, pushing the idea that she can't win to help dry up her money raising, which is suffocating the rest of the field. Hillary was the topic this morning on MTP and Fox news. For the MSM it is Hillary all the time, favorable and unfavorable.