Flyers now being placed on doors of some Denver-area homes that claim some of the people collecting signatures for a recall effort are ex-convicts and sex offenders.
Colorado Springs residents who signed a petition to recall a Democratic leader because of his support for stricter gun laws claim they are being harassed by his supporters.
Democrats trying to block a recall election of state Senate President John Morse have brought another allegation that the petition is invalid.
Colorado officials have scheduled a hearing July 3 to address a protest of a petition to recall state Sen. Angela Giron, of Pueblo.
A recall petition against a second Democrat who supported Colorado gun control measures has been deemed sufficient.