New Hampshire Gov. Chris Sununu has taken his most significant step yet in exploring a White House bid, launching a national political organization that’s a popular tool for prospective presidential candidates testing the waters. The governor first confirmed to NBC News on Wednesday that he had formed the "Live Free or Die" committee (borrowed from his state’s nickname), a 501(c)(4) organization where politicians can raise unlimited funds. The donations don't have to be disclosed, and prospective candidates often use these political nonprofits as a way to gauge interest from donors.