Percentage of votes
| Specification | Votes 2014 | Votes 2009 | Diff. on 2009 in p.p. | ||
|---|---|---|---|---|---|
| Number | % | Number | % | ||
| Persons entitled to vote | 2,519,758 | – | 2,473,787 | – | – |
| Voters | 1,177,832 | 46.7 | 869,339 | 35.1 | +11.6 |
| Invalid | 18,166 | 1.5 | 10,989 | 1.3 | +0.3 |
| Valid | 1,159,666 | 98.5 | 858,350 | 98.7 | -0.3 |
| CDU | 232,274 | 20.0 | 208,395 | 24.3 | -4.2 |
| GRÜNE | 220,998 | 19.1 | 202,437 | 23.6 | -4.5 |
| SPD | 278,694 | 24.0 | 161,635 | 18.8 | +5.2 |
| DIE LINKE | 188,344 | 16.2 | 126,442 | 14.7 | +1.5 |
| FDP | 31,953 | 2.8 | 74,522 | 8.7 | -5.9 |
| PIRATEN | 37,442 | 3.2 | 12,063 | 1.4 | +1.8 |
| Tierschutzpartei | 18,601 | 1.6 | 11,617 | 1.4 | +0.3 |
| REP | 2,863 | 0.2 | 8,001 | 0.9 | -0.7 |
| FAMILIE | 6,107 | 0.5 | 5,909 | 0.7 | -0.2 |
| FREIE WÄHLER | 3,454 | 0.3 | 3,932 | 0.5 | -0.2 |
| ÖDP | 3,674 | 0.3 | 2,018 | 0.2 | +0.1 |
| DKP | 3,009 | 0.3 | 1,971 | 0.2 | ±0.0 |
| Volksabstimmung | 3,883 | 0.3 | 1,966 | 0.2 | +0.1 |
| PBC | 872 | 0.1 | 1,186 | 0.1 | -0.1 |
| AUF | 1,095 | 0.1 | 1,080 | 0.1 | ±0.0 |
| CM | 550 | 0.0 | 746 | 0.1 | ±0.0 |
| PSG | 745 | 0.1 | 713 | 0.1 | ±0.0 |
| BP | 468 | 0.0 | 682 | 0.1 | ±0.0 |
| BüSo | 692 | 0.1 | 655 | 0.1 | ±0.0 |
| AfD | 91,759 | 7.9 | – | – | – |
| PRO NRW | 646 | 0.1 | – | – | – |
| MLPD | 1,169 | 0.1 | – | – | – |
| NPD | 11,842 | 1.0 | – | – | – |
| Die PARTEI | 18,532 | 1.6 | – | – | – |
| Political groups/individual candidates | – | – | 32,380 | 3.8 | – |