The search for an ACM Awards co-host to fill Reba McEntire's shoes is over -- but we won't find out who until 25,000 people Tweet about it. When that happens, the ACM will reveal the date of the show and the new co-host.

Co-host Blake Shelton says finding someone to replace Reba has been a challenge and teases that they had to lower their standards. "If we can just get somebody that can read. This is country music and that's narrowing the field down." But he hints, "This particular artist is a fan favorite to the point where I'm starting to feel the pressure of this person's stardom creeping up into my territory."

Reba, who'd hosted the show both solo and with Blake for more than a decade, has stepped down to concentrate on her sitcom, Malibu Country.