In a statement, Walker expressed concerns that he and Lieutenant Gov. Valerie Davidson would not win the upcoming three-way race for the governorship.
"With more time, I'm confident that Val and I will have a message and a campaign that could win this election," Walker wrote in an Instagram post on Friday night. "But there are only 18 days left before Election Day, the ballot cards have already been mailed, and the Alaskans are already voting, and in the remainder of the time, I believe we can not win a three-way race."
The absentee ballot has already begun, and early voting will begin on Monday, meaning Walker's name is likely to stay on the ballot.
Walker, an independent, endorsed Democratic candidate Mark Begich, a former US Senator, quotes the way Begich's priorities are "tighter" with his than that of Republican candidate Michael Dunleavy.
"This week I talked to many Alaskans to see if I or Mark Begich have a better chance of competing against Mike Dunleavy, and Begich has a better chance," Walker wrote.
"The bottom line is that despite my many differences with Mark Begich, his attitude to important issues … more closely matches my priorities for Alaska," he later
Casey Steinau, chairman of the Alaska Democratic Party, thanked Walker for "putting Alaska for the first time". 1
The governors' associations of both parties attempted to spin the announcement as positive for their nominees, with the Democratic Gubernatorial Association saying that Walker's decision should direct the race to Begich, and the Republican governors said it was a "political charade" by Begich and Walker
"Bill Walker's announcement – just three days before the start of the vote – only confirms why Alaska desperately needs change," said RGA Communications Director Jon Thompson in a statement, "at a time when Alaska is facing tremendous momentum Challenges, Mark Begich and Bill Walker have been more focused on protecting their own power and their common failed liberal agenda than actually addressing these critical issues. Alaska's worth more than this political charade by Mark Begich and Bill Walker.
"This is a turning point in the Alaska governor's race. This race will instantly become a tossup, open race between a popular Democrat in Mark Begich and a Rand Republican in Mike Dunleavy, "said Elizabeth Pearson, executive director of the Democratic Gubernatorial Association
Adam Levy and Terence Burlij of CNN have to contributed to this report.