Pinkham Notch, New Hampshire (CNN) There's cold, and then there's New-Hampshire-in-winter cold.

It's a bracing I-can't-feel-my-hands, there's-snow-on-my-neck, why-won't-my-car-heat-up-faster kind of cold that calls for heavy duty boots, long underwear and plates of comfort food.

These were the sub-zero conditions that roughly 500 reform-minded activists faced as they marched south from Dixville Notch, down the roads and highways of the frozen-over Granite State last month. No cars, no heaters, no stopping — except for an emergency peanut butter sandwich. They slept in the homes of supporters, in public libraries, in church basements and in a camping lodge nestled on the nape of Mount Washington in the state's picturesque north country.

JUST WATCHED How Marion Barry became D.C.'s 'Mayor for Life' Replay More Videos ... MUST WATCH How Marion Barry became D.C.'s 'Mayor for Life' 03:11

They converged in Concord on Jan. 21, marking the fifth anniversary of the Citizens United Supreme Court ruling.

JUST WATCHED Look Who's Coming to Dinner Replay More Videos ... MUST WATCH Look Who's Coming to Dinner 02:22

JUST WATCHED Hambycast: Searching for freedom in Iowa Replay More Videos ... MUST WATCH Hambycast: Searching for freedom in Iowa 03:28

JUST WATCHED Sen. Marco Rubio calls into Hambycast Replay More Videos ... MUST WATCH Sen. Marco Rubio calls into Hambycast 05:32

You probably didn't hear about the marchers of NH Rebellion because their cause — campaign finance reform — has been left for dead by lawmakers and opinion elites of Washington. In the aftermath of Citizens United and McCutcheon vs. FEC — landmark Supreme Court decisions that gutted the McCain-Feingold campaign finance regulations — the chances of Congress passing new laws to clamp down on money in politics seem dim at best.

Read More