Looking back through modern U.S. campaigns, there's simply no media model for so many members of the press to try to drive a competitive candidate from the field while the primary season is still unfolding.
Until this election cycle, journalists simply did not consider it to be their job to tell a contender when he or she should stop campaigning. That was always dictated by how much money the campaign still had in the bank and how many votes the candidate was still getting.
No longer content to be observers of the campaign, journalists now see themselves as active players in the unfolding drama, and they show no hesitation trying to dictate the basics of the contest, like who should run and who should quit. It's as if journalists are auditioning for the role of the old party bosses.
Read the full Media Matters column here.