evidence: Bernie Sanders, a longtime critic of the nation’s campaign finance system, is releasing a plan Monday aimed at ending the influence of corporate cash in politics, including at the 2020 Democratic National Convention. [...] Sanders’plan states that corporate lobbyists "were everywhere and filled the VIP suites" at the convention, adding that "this type of corporate sponsorship is a corrupting influence and must end if politicians are going to represent the American people." His proposal also calls for a lifetime lobbying ban on Democratic National Committee chairs and co-chairs, as well as a prohibition on them working for companies that hold federal contracts or are trying to obtain government approval for mergers or other projects. [...] Sanders’ platform against corporate money also puts a spotlight on the candidate’s fundraising operation, which is powered almost exclusively by small-dollar donors. Sanders raised $25.3 million in the third quarter of the year, more than any other Democratic presidential candidate, but that news has been subsumed somewhat by his health scare.