There's nothing like a frenzied campaign schedule to get candidates talking about the wisdom of public financing. This article in The Washington Post focuses on how the early primary in California is putting the Democratic presidential field into overdrive, and wraps with Hillary Clinton promising to put her weight behind public financing of elections if she lands in the White House.
Hillary Clinton's decision to opt out of the presidential public financing system for both the primary and general elections was called the "death knell" of the public financing system; but really it just served to emphasize how wildy expensive this presidential race is expected to be, and how much money candidates must bring in to remain competitive. Clinton has expressed support public financing a few times on the campaign trail and been supportive of past efforts in the Senate on public financing of campaigns. Perhaps her extended time in the fundraising trenches has served to strengthen her committment to the issue.