CNN projecting that John McCain has clinched the Republican nomination with today's results.

Late Update: TPM Reader KB ponders the impact of McCain's win on Dems:

Does John McCain clinching of nomination tonight have an impact on the psychology of the Dem supers? Do they see him cross that threshold and begin to feel that they need to step in now to close down their contest too? Does it make the coalescing around a winner more urgent in their minds after they see this?

Undoubtedly true to an extent. But tonight's results will have a big impact on whether that coalescing begins now or later. The Clinton camp is pleading for those undecided supers to hold off for now.