It's a specific drive to overcome the Supreme Court's decision in the Citizens United decision. The following language has been put out there for debate, a possible Constitutional amendment:
No person, corporation or business entity of any type, domestic or foreign, shall be allowed to contribute money, directly or indirectly, to any candidate for Federal office or to contribute money on behalf of or opposed to any type of campaign for Federal office. Notwithstanding any other provision of law, campaign contributions to candidates for Federal office shall not constitute speech of any kind as guaranteed by the U.S. Constitution or any amendment to the U.S. Constitution. Congress shall set forth a federal holiday for the purposes of voting for candidates for Federal office.
Go to the link above to sign the petition, which has already reached almost 100,000 names in one day.