UPDATED Wed. May 7, 6:27 p.m.: AFSCME spokesman Gregory King told The Hill he has learned that AFSCME's Indiana affiliate disseminated the leaflet.

Change to Win, a coalition of seven unions, accused the American Federation of State, County and Municipal Employees (AFSCME) today of deceiving its Indiana workers with a pro-Hillary ClintonHillary Rodham ClintonBooker is taking orders from corporate pharmaceuticals Hillary Clinton under microscope at inauguration The story of the Trump transition, as told in 57 @RealDonaldTrump tweets MORE leaflet, while AFSCME spokesmen say the leaflet is news to them.

The two groups are on opposite sides of the Democratic nomination fight, as AFSCME endorsed Clinton in October while Change to Win endorsed Barack Obama Feb. 21. Change to Win's affiliates include the Service Employees International Union (SEIU), which has organized door-to-door campaigning and phone banking for Obama in Indiana, and has aired a pro-Obama ad on Indiana television.

Change to Win claims AFSCME disseminated a pro-Clinton leaflet, bearing the message "brought to you by your union" and not containing any AFSCME identification, to Change to Win union members in Indiana.

"It's a shame that the discourse of the Democratic presidential primary campaign has sunk to the point of lying to our union brothers and sisters on the eve of the Indiana primary election," Change to Win Executive Director Greg Tarpinian said today in a statement.

"These deplorable and dishonest tactics undermine our democratic process and the hard work of thousands of Change to Win and other union members and volunteers working tirelessly to help make Sen. Barack ObamaBarack ObamaReport: Manafort part of intelligence review of intercepted Russian communications Obama staffers challenged to WH scavenger hunt on final day Report: Trump has given up personal cellphone MORE the 2008 Democratic presidential nominee. We expect these types of deplorable tactics from the McCain campaign, not AFSCME."

AFSCME denies Change to Win's claim, and its spokesman say they haven't seen or heard of such a leaflet. AFSCME has only disseminated leaflets to its own members in Indiana, they say, and AFSCME always identifies itself on leaflets for its members.

"We haven