docs: def lis_to_bio_map(folder):
      """
      Senators have a lis_id that is used in some places. That's dumb. Build a
      dict from lis_id to bioguide_id which every member of congress has.
      """
      logger.info("Opening legislator csv for lis_dct creation")
      lis_dic = {}
      leg_path = "{0}/legislators.csv".format(folder)
      logger.info(leg_path)
      with open(leg_path, 'r') as csvfile:
          leg_reader = csv.reader(csvfile)
          for row in leg_reader:
              if row[22]:
                  lis_dic[row[22]] = row[19]
      return lis_dic