| 2010 Pennsylvania Elections: Important Dates To Remember |
| February 16 | First day to circulate and file nomination petitions |
| March 9 | Last day to circulate and file nomination petitions |
| March 10 | First day to circulate and file nomination papers |
| March 24 | Last day for withdrawal by candidates who filed nomination petitions |
| April 19 | Last day to REGISTER before the primary |
| May 11 | Last day to apply for a civilian absentee ballot |
| May 14 | Last day for County Boards of Elections to receive voted absentee ballots |
| May 18 | PRIMARY ELECTION |
| May 19 | First day to REGISTER after primary |
| August 2 | Last day to circulate and file nomination papers |
| August 9 | Last day for withdrawal by candidates nominated by nomination papers |
| August 9 | Last day for withdrawal by candidates nominated at the primary |
| October 4 | Last day to REGISTER before the NOVEMBER election |
| October 26 | Last day to apply for a civilian absentee ballot |
| October 29 | Last day for County Boards of Elections to receive voted absentee ballots |
| November 2 | GENERAL ELECTION |
| November 3 | First day to REGISTER after November election |
