Given the fact that every Republican primary this time will apportion delegates in proportion to the vote, I think that it is absurd to assert that ANYONE has it locked up before the first primary has even been held.
Moreover, I think it is likely that there will be at least three, and maybe four first tier candidates contesting these primaries and that as a result it is unlikely that ANY candidate will be able to lock up the nomination until very late - maybe not until the convention itself.
This article is errant nonsense.
The article is just a pro-Romney thing in hopes of scaring off some of the weaker candidates.