JEFFERSON CITY • Attorneys for Dr. Brad Bradshaw, a Springfield physician and personal injury lawyer who is self-funding a medical marijuana campaign, withdrew a lawsuit Tuesday aimed at a rival group that is promoting a medical pot ballot initiative of its own.

Bradshaw, who is backing Amendment 3 on the November ballot, wanted to strip another medical pot proposal, Proposition C, from the ballot by challenging roughly 40 signatures the group backing the effort had collected in the Kansas City-based 5th congressional district.

"In District 5, it was certified by 38 signatures," James Meadows, attorney for Bradshaw, told Cole County Circuit Judge Patricia Joyce on Aug. 30. "We are making a straight challenge claiming that those 38 signatures are not valid and that it should be taken off the ballot."

A hearing in that lawsuit was scheduled for Thursday. Meadows and a spokesman for Bradshaw, whose campaign is called Find the Cures, did not immediately respond to a request for comment on Tuesday evening.