Bruce Garren, chairman of the Personhood Kansas Committee, said Friday the measure is ready to be introduced in the House. Passage by two-thirds majorities in the House and Senate would put the question to a statewide vote.
The measure would amend the Kansas Constitution to say the state will guarantee the rights of every human being, starting at fertilization of the egg.
Abortion rights advocates call the proposal extreme and say it would ban common methods of birth control.
Some abortion opponents are also wary, arguing the movement will make permanent gains by pursuing less sweeping issues.