Their other nominations include vocal group, emerging artist and album of the year. Dailey also received a nod for male vocalist, while Vincent did the same for bass player.
"When they mentioned our names for all the different categories, I was most proud of Jamie being nominated for male vocalist. I really thought he was deserving of that," Vincent said.
Dailey was equally complimentary of his musical partner: "He's one of the best bass players we've got in this business, and to finally see him get recognition after standing behind for all these years is just wonderful."
Del McCoury and Kathy Mattea announced the nominations Thursday at the Country Music Hall of Fame and Museum.
Other leading nominees included Blue Highway, Skaggs and Kentucky Thunder, and the Dan Tyminski Band - all of whom received six nominations apiece.
Tyminski, a longtime member of Alison Krauss' Union Station, released his second solo disc, "Wheels," in June. His nominations include male vocalist, an award he's won three times (2001-2003).
The awards show will be Oct. 2 at the Ryman Auditorium. McCoury, who was nominated for entertainer of the year, will host.
"It's always an honor to get nominated, and its always a surprise too," said McCoury, whose band has won more than 30 IBMA awards, including nine for entertainer of the year. "You know, there's a lot of young bands out there that are really entertaining the people these days. I'd rather one of them would win it, because they're great. But I still love talking to people on stage, and we do requests from the audience all the time. I figure they pay to get in to see you, so you need to do what they want you to do."
A complete list of nominees is available at www.ibma.org.