| February 12 | Preregistration Deadline: Voter registrations must be received by the county clerk for the March 9 election |
| February 26 | Last day for an application for a mail-in absentee ballot to be received by the County Clerk not later than 5:00 p.m. for March 9 election |
| March 5 | Last day for Early Voting at the Nez Perce County Courthouse for the March 9 election. Voting ends at 5:00 p.m. |
| March 9 | Last day to return absentee ballots to the Nez Perce County Courthouse for the March 9 election. Ballots must be received by 8:00 p.m. |
| March 9 | Election Day. Election Day Registration is available |
| March 10 | Voter registration reopens |
| March 19 | Candidate filing deadline |
| April 23 | Preregistration Deadline: Voter registrations must be received by the county clerk for the May 18 election |
| May 7 | Absentee Ballot Application Deadline: Application requests for a mail-in absentee ballot must be received by the County Clerk not later than 5:00 p.m. for the May 18 election |
| May 14 | Last day for Early Voting at the Nez Perce County Courthouse for the May 18 election. Voting ends at 5:00 p.m. |
| May 18 | Last day to return absentee ballots to the Nez Perce County Courthouse for the May 18 election. Ballots must be received by 8:00 p.m. |
| May 18 | Election Day. Election day registration is available |
| May 19 | Voter registration reopens |
| August 6 | Preregistration Deadline: Voter registrations must be received by the county clerk for the August 31 election |
| August 20 | Absentee Ballot Application Deadline: Application requests for a mail-in absentee ballot must be received by the County Clerk not later than 5:00 p.m. for the August 31 election |
| August 27 | Last day for Early Voting at the Nez Perce County Courthouse for the August 31 election. Voting ends at 5:00 p.m. |
| August 31 | Last day to return absentee ballots to the Nez Perce County Courthouse for the August 31 election. Ballots must be received by 8:00 p.m. |
| August 31 | Election Day. Election day registration is available |
| September 1 | Voter registration reopens |
| September 3 | Nonpartisan Candidate Filing Deadline: Petitions must be filed by 5 p.m. with the clerk of the political subdivision to nominate political subdivision candidates for the November 2 election |
| October 8 | Preregistration Deadline: Voter registrations must be received by the county clerk for the November 2 election |
| October 22 | Absentee Ballot Application Deadline: Application requests for a mail-in absentee ballot must be received by the County Clerk not later than 5:00 p.m. for the November 2 election |
| October 29 | Last day for Early Voting at the Nez Perce County Courthouse for the November 2 election. Voting ends at 5:00 p.m. |
| November 2 | Last day to return absentee ballots to the Nez Perce County Courthouse for the November 2 election. Ballots must be received by 8:00 p.m. |
| November 2 | Election Day. Election day registration is available |
| November 3 | Voter registration reopens |