Following Boise State's regular season ending win over San Jose State, where they finished the 2015 regular season 8–4, 5–3 in West Division play to finish in a four way tie for 2nd place, the Poinsettia Bowl expressed their interest in inviting the Broncos.[6] The Las Vegas Bowl held the first selection from the Mountain West but also had an agreement to pick BYU in either 2015 or 2019. When Las Vegas chose to invite BYU, the Mountain West's first selection fell to the Poinsettia Bowl. The Poinsettia Bowl was not obligated to take the Mountain West Champions, San Diego State, and could choose any Mountain West team they wanted. They chose the Broncos, who made their second Poinsettia Bowl appearance and first appearance since 2008 where they lost to TCU 17–16 to end their undefeated season.
Had Army become bowl eligible, they would have been invited to the Poinsettia Bowl. When they failed to become bowl eligible, the selection fell to the Mid-American Conference. The Northern Illinois Huskies were selected to set up a match-up of two of the winningest programs since 2010. The Huskies finished the regular season 8–5, 6–2 in West Division play to finish in a four way tie for the division title. They represented the West Division in the MAC Championship Game where they lost to Bowling Green. It was the Huskies sixth consecutive MAC Championship Game appearance. It was the Huskies third Poinsettia Bowl appearance with losses in 2006 and 2013.