This is the week we will begin to see the GOP field blossom toward its eventual full size with the addition of multiple candidates with little chance of getting the nomination but with the potential to fracture the campaign in significant ways.
Already, Dr. Ben Carson and former Hewlett-Packard CEO Carly Fiorina have announced they are running. And former Arkansas Gov. Mike Huckabee is expected to join the race later this week.
That will put the field of announced or likely candidates at a dozen with possibly more to come. That's even more than 2012, which saw a parade of GOP front-runners and a race to the right that badly damaged eventually nominee Mitt Romney.
The 2016 field could wind up doing the exact same thing to whoever survives the primary contest, though the GOP has at least succeeded thus far in limiting the number of debates.