Former Florida Gov. Jeb Bush's campaign dismissed the no-new taxes pledge as something "circulated by lobbying groups" and he says he "will not sign." David Goldman/AP hide caption toggle caption David Goldman/AP It's All Politics Read Their Lips: No New Taxes. Pledge Season Is Officially Open. April 24, 2015 For more than a quarter century, Republicans have been asked to sign a pledge not to raise taxes. The first two presidential candidates this year have signed it, but there could be one big holdout.