This is despicable reporting, but it's what I would expect from the corporate news media, which includes the Register-Guard. They're calling the election the night before the California primary, hoping to convince the uninformed that it's all over and there is no point in voting. Clinton only has enough convention votes if you include the super-delegates, who do not actually vote until the convention and could change their minds between now and then, especially since Sanders is leading in polls against Trump and Clinton's email scandal could still blow up in her face.

If you want real news, read the Common Dreams website or many other online sources. For CD's take on this "news" see:
http://www.commondreams.org/news/2016/06/06/voter-outraged-media-accused-falsely-preemptively-nominating-clinton