East Helena
| YEAR | CITY/COUNTY | EXISTING FORM | PROPOSED FORM | FINAL FORM | 
| 1976 | East Helena | COM EX (306) | COM EX (A)* (250) | COM EX | 
| 1986 | East Helena | COM EX | NO REVIEW | COM EX | 
| 1996 | East Helena | COM EX | NO PROPOSAL | COM EX | 
| 2006 | East Helena | COM EX | NO REVIEW | COM EX | 
| 2016 | East Helena | COM EX | NO REVIEW | COM EX | 
| 2026 | East Helena | COM EX | NO REVIEW | COM EX | 

