As it did earlier against Sen. Arlen Specter, the Club for Growth will be sending mailers to Lisa Murkowski’s donors helping them to seek refunds of their donations. From the Club:

As in a similar effort that cost Sen. Arlen Specter more than $800,000, Club for Growth PAC will contact more than 1,500 of Murkowski’s donors via mail.

“Lisa Murkowski received this money running as a Republican, and now she’s running against the Republican,” said Club President Chris Chocola.  “She promised to support the winner of the Republican Primary, then broke her word…”

The mailing will include a letter explaining Murkowski’s broken promise to support the Republican Party nominee, and a letter addressed to the Murkowski campaign that donors can use to ask for their money back.