(CNN) - The Chairman of the Tea Party Express told CNN on Friday that Republican Sen. Lisa Murkowski's decision to mount a write-in re-election effort shows that she doesn't "get it."
"She was fired by the people. The people were given a choice and they voted for somebody else," Amy Kremer told CNN. Kremer said she was shocked to learn of Murkowski's decision.
Kremer's group worked hard to push Joe Miller, the winner of Alaska's GOP Senate primary, over the finish line. After endorsing Miller in June, the Tea Party Express sent in staffers to scour the state in support of his candidacy and spent nearly $600,000 to help his campaign.
Adding yet another twist to the dramatic Republican battle in Alaska, Kremer thought her conservative organization was essentially done beating back Murkowski's re-election bid. But told CNN that given this latest development, "Oh, I'm sure we'll be back up there at some point."
Murkowski's decision to mount a write-in effort is sure to spark anger among her Republican colleagues. On Thursday Brian Walsh, Communications Director for the National Republican Senatorial Committee, said in a statement, "Alaska's voters have spoken, and have chosen Joe Miller as their Republican U.S. Senate nominee. If Senator Murkowski is truly committed to doing 'what is right' for her state, then we hope that she will step forward and fully endorse Joe Miller's candidacy."
There is speculation that Murkowski's refusal to bow out of the race could split the Republican vote, possibly helping the Democratic challenger, Sitka Mayor Scott McAdams.
Kremer told CNN she is not worried about Murkowski's decision.
"If anything, it's going to turn more voters out for [Miller] because it's going to tick people off."
Kremer also addressed a fresh slam from Murkowski. In press release put out on Wednesday – stating when she'd announce her decision on a write-in bid - Murkowski wrote that she believed, "That the Alaska Republican Party was hijacked by the Tea Party Express, an outside extremist group."
Kremer told CNN her group is unfazed by the criticism.
"She can say whatever she wants to about us," Kremer said. "It's not us who voted, it's the people of Alaska and I don't think they're too extreme."