TOPEKA, Kan. (AP) -- The Kansas Senate has blocked debate on a compromise plan to cut income taxes, leaving the proposal's fate in doubt.

The Senate voted 21-18 Friday against removing a procedural hurdle to debating the measure. The proposal was drafted earlier this week by House and Senate negotiators.

The compromise would gradually lower individual income tax rates and eliminate income taxes for 191,000 businesses over six years.

A separate bill making the same cuts in one year has already gone to Gov. Sam Brownback. Some lawmakers fear the more aggressive measure would create massive budget problems.

But many senators had misgivings about the compromise and wanted negotiations to restart. However, House Speaker Mike O'Neal, a Hutchinson Republican, has said that won't happen.