The secretary of state`s office says a group sponsoring a proposed ballot item to legalize marijuana for medical use has not gotten enough signatures. Backers of the proposed law needed 64,456 signatures of registered voters to get on the November second ballot. The group had 29,974 valid names of 66,282 that were submitted. The primary group backing the measure has withdrawn support so it can concentrate on states where ballot placement is assured. Local supporters have said they will try to collect the signatures they need to make up the difference and still try to get the item on the ballot.