The campaign finance wars return to the U.S. Supreme Court on Monday. Last year, the high court, by a 5-4 vote, overturned a century-old legal understanding that barred corporations from spending money on candidate elections.

Now comes an attack from a different direction — a challenge to a public financing system that has existed in Arizona for more than a decade. Once again, reform advocates face an uphill battle.

Read the complete NPR story, “High Court Takes Another Stab At Campaign Finance.”