Except as otherwise provided by law, if a voter desires to vote for a person whose name is not on the ballot, the voter shall write the name of such person in the blank space, if any is provided, under the appropriate title of the office. If no blank space is provided for writing in the name of a person whose name is not on the ballot, voters may not vote for any person whose name is not on the ballot.
K.S.A. 25-2903