On the same day voters cast ballots in South Carolina's presidential primary, a related but even more influential milestone will pass.
Saturday is also the second anniversary of the Supreme Court's poisonous Citizens United decision, which allows billionaires, corporations, unions, and other special-interest groups to brazenly spend obscenely unlimited amounts on political advertising.
The two-year-old decision turned back decades of campaign-finance reforms aimed at reducing the influence of elites over the government. In essence, the court weakened the power of all but the wealthiest to determine elections' outcome.
A once-surging Newt Gingrich became the first casualty of Citizens United in the current presidential race after a Mitt Romney-supporting-super-PAC spent millions on three weeks of negative advertising that turned Gingrich into a fourth-place loser in the Iowa Republican caucuses.