This doesn't need to be too long of a petition description, because it's in essence very, very simple.
Getting money out of politics via repealing Citizens United and eradicating the lobbying industry is THE MOST BIPARTISAN ISSUE. It's now officially Joe Biden's turn to unite the Democratic Party against Donald Trump, but the main differentiation between him and Bernie is their stance on campaign finance and the prevalence of money in politics.
Choose now to withhold your support for Biden in an effort to coerce his campaign into UNEQUIVOCALLY VOWING to get money out of politics. We all know he might just lie about doing something, but at least we'll have him on the record with an actual campaign promise people care about!