Supporters of Proposition 11 have filed a formal complaint with the Fair Political Practices Commission.
They name Senate President Pro Tem Don Perata and the California Correctional Peace Officers Association .
The union that represents prison guards gave a committee controlled by Perata more than a-half-million dollars.
The complaint alleges the money was really meant to fight Prop 11. The measure would change the way political districts are drawn in California.
Perata opposes it.
The complaint says the union is trying to avoid proper disclosure of its contributions.
Jeannine English is with the Yes on Prop 11 c38aign .
She says the money was given as the state prison guards' union seeks a pay raise.
English: Voters deserve to know what's behind the scenes and what the behind the scenes conversations are between Perata, his political advisers and the Prison guards union…
The "No on Prop 11" C38aign calls the complaint a stunt.
He says the contributions could be used to support or fight a variety of ballot measures.
