The real trouble is coming, however. Walker’s inability to secure his position means that more candidates are joining the race. Since Walker was peaking in late March and early April, Ted Cruz, Rand Paul, Marco Rubio, Ben Carson, Carly Fiorina and Mike Huckabee have all announced. And, while Rubio is getting strong numbers nationally, watch for Huckabee to eat right into Walker’s evangelical base in Iowa.