He won in one court and lost in another. I was pretty surprised that the judge had ordered him to be included in the debate, that really sounded like judicial overreach to me:

The Nevada Supreme Court said Tuesday MSNBC can exclude Democratic presidential hopeful Dennis Kucinich from a candidate debate.
Lawyers for NBC Universal Inc., had asked the high court to overturn a lower court order that the cable TV news network include the Ohio congressman or pull the plug on broadcasting the debate Tuesday night with Hillary Rodham Clinton, Barack Obama and John Edwards.

An hour before the debate, the state Supreme Court’s unanimous order said that blocking the debate unless Kucinich got to participate would be “an unconstitutional prior restraint” on the news network’s First Amendment rights. The justices also said the lower court exceeded its jurisdiction by ordering Kucinich’s participation even though he first requested and was denied relief from the Federal Communications Commission.