Bill Clinton: Asset or liability? And Nikki Haley: GOP rising star.

On the Webcast Extra: Bill Clinton has been hitting the campaign trail on behalf of his wife Hillary Clinton, but Republicans and Democrats have used his past indiscretions against him. Is he helping or hurting Hillary’s second campaign for the White House? And South Carolina Gov. Nikki Haley delivered the Republican response to the State of the Union address. Is the GOP rising star a potential vice-presidential candidate? Plus, President Obama hit the trail to sell his State of the Union message and will the three Republican candidates at the undercard debate be able to rise into the top tier?