Seeking to reinvigorate his Republican presidential campaign, Texas Gov. Rick Perry will unveil next week his plan to simplify the federal tax code with a flat income tax rate – a proposal that has energized conservatives in the past but failed to gain mainstream support.

Perry, who entered the presidential race to great fanfare in August but stumbled in his first few debates, is hoping his plan will help recapture the early momentum of his campaign much in the same way that Herman Cain’s 9-9-9 plan helped vault him to the front of the GOP field. But Cain’s plan has come under intense scrutiny and criticism ever since, forcing the former pizza company executive to redefine the plan to make it fairer for the poor.