{
  "n_full": 714,
  "n_primary": 661,
  "n_dropped": 53,
  "n_states_primary": 51,
  "year_min": 2008,
  "year_max": 2021,
  "drop_reasons": {
    "aa_not_observed": 6,
    "share_not_observed": 52,
    "either": 53
  }
}