D.M. "Mac" Campbell Jr. of Elizabethtown has resigned from the state Board of Transportation.

In a letter to Perdue, Campbell cited "the increased demands of my business as well as my desire to spend more time with my children and grandchildren," Bruce Siceloff reports.

Campbell, appointed by former Gov. Mike Easley, served on the board for eight years. He and family members contributed more than $26,000 to Perdue's Democratic primary opponent, Richard Moore, and they later gave money to Perdue's campaign. He represented Bladen, Columbus, Cumberland, Harnett and Robeson counties.

His resignation comes a month after Durham lawyer Kenneth Spaulding said he would step down so he could give more time to his business interests. Doug Galyon of Greensboro, the board's longtime chairman, has said he is ready to leave the board as soon as Perdue finds a successor.

A spokeswoman for Gov. Beverly Perdue said she didn't know when the governor would name new board members.