That liberal media, at it again: Representative Dennis Kucinich has every right to keep campaigning despite his minuscule vote tallies, but he should not be allowed to take up time in future candidate debates. Neither should the Rev. Al Sharpton, who is running to continue running, not to win Kucinich and Sharpton were, of course, perhaps the two most interesting candidates in those debates. And their presence raises the burning issues muffled by the consensus of the Democratic establishment. Lieberman's presence, for that matter, should force the four NYT-approved candidates to argue for a vision of the Democratic party as meaningfully to the left of the Republicans - practice that could only help them.