On the sixth anniversary, Sen. Bernie Sanders offered this twitter rant, and promised “Any Supreme Court nominee of mine will make overturning Citizens United one of their first decisions.”
I have previously blogged about how the candidates discuss the Supreme Court, including Marco Rubio (here, here, here, here, and here), Jeb Bush (here and here), Rand Paul (here and here), Ted Cruz, Hillary Clinton, and Bernie Sanders (here and here).
Disclosure: I advise the Rand Paul campaign.