She already has the nomination, do not kid yourself. Almost all of the super delegates are in her corner so the regular delegates really do not matter. This will be the most tabloid worthy presidential race in all of history. George Washington would be rolling over in his grave right now.
By the end of the primary process, Mrs. Clinton will have secured enough delegates and super delegates to clinch the Democratic nomination. She is near enough to the number to render that a foregone conclusion. Whether or not she accomplishes that in Puerto Rico, which if my math and chronology serves, she did not, is simply a matter for history.
Yes, she will be "just shy of clinching the nomination" NEXT MONTH, not "now" at all. She still needs 576 delegates which is still a pretty tall order. That, of course, won't stop corporate media calling her the "winner" of the nomination before Tuesday's polls close. The email server is a much bigger issue. It shows how dishonest and manipulative Hillary is. Americans will NOT be best represented by Hillary, she is only in this for her own power and gain.
Clinton will win Puerto Rico, but she will still need to win New Jersey in order to secure the title of presumptive nominee. She still will not technically have the nomination, as Sanders has sworn to get through California and to the convention in order to try to get the super delegates to change their minds.