More than 1,000 advocates for the developmentally disabled rallied at the Kansas Statehouse to urge officials to maintain the current system.
Many of those gathered Wednesday wrote messages on a 65-foot canvass banner addressed to Governor Sam Brownback.
They argue that folding services for the developmentally disabled into the state's Kancare medicaid system will hurt families, clients and care givers.
That is scheduled to happen in 2014 when the services would be provided through three private health insurance companies that operate the Kancare system.
The governor says that under Kancare, their healthcare will be better coordinated and tracked to ensure they receive the services they need.