The longer the candidates stay in, the longer the process is "newsworthy" and the longer that the media reports (for free) attacks against Bush.
The whole frontloaded primary season was designed to prevent the appearance of a grassroots candidate like Jerry Brown in 1992. And there are many other problems besides being antidemocratic, for example, there is not enough time for candidates to go through the full vetting process. But the most important tactical problem is that the primary process creates great free publicity for the presumptive nominee, and the early termination of the process will likely end the free media attention.
Btw, so far this primary season is much less "bloody" than 1992. for example, at one debate in 1992, Jerry Brown brought up a version of the whitewater charges against Clinton. Some reported that they almost came to blows at the debate.
Btw, Good old Jerry was never one to not speak his mind.
He was one of the first before Dean (and Nader) who wanted to take back this country from corrupting corporate interests.
Look at some of what he thought here:
http://www.4president.org/speeches/jerrybrown1992announcement.htmhttp://groups.google.com/groups?q=%22gulf+war%22+%22jerry+brown%22&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=3Rgulf-hollywood_221%40clarinet.com&rnum=1http://groups.google.com/groups?q=%22gulf+war%22+%22jerry+brown%22&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=3Rgulf-hollywood_221%40clarinet.com&rnum=1Look at what he said about the frontloaded process for this year's primary season.
http://www.thenation.com/doc.mhtml%3Fi=20020121&s=nichols