| Election For | Date | Votes | Registered Voters | Turn Out |
|---|---|---|---|---|
| Referendum | 1998-05-22 | 953,683 | 1,189,093 | 80.2% |
| Northern Irish Assembly | 2003-11-26 | 702,249 | 1,097,526 | 63.98% |
| Northern Irish Assembly | 2007-03-07 | 696,538 | 1,107,904 | 62.87% |
| Northern Irish Assembly | 2011-05-11 | 661,753 | 1,213,136 | 54.55% |
| Northern Irish Assembly | 2016-05-05 | 703,744 | 1,281,595 | 54.91% |
| Northern Irish Assembly | 2017-03-02 | 812,783 | 1,254,709 | 64.78% |