Percentage of votes
| Specification | Votes 2014 | Votes 2009 | Diff. on 2009 in p.p. | ||
|---|---|---|---|---|---|
| Number | % | Number | % | ||
| Persons entitled to vote | 1,283,323 | – | 1,256,701 | – | – |
| Voters | 558,277 | 43.5 | 436,266 | 34.7 | +8.8 |
| Invalid | 5,406 | 1.0 | 3,633 | 0.8 | +0.1 |
| Valid | 552,871 | 99.0 | 432,633 | 99.2 | -0.1 |
| CDU | 135,780 | 24.6 | 128,443 | 29.7 | -5.1 |
| SPD | 186,638 | 33.8 | 109,766 | 25.4 | +8.4 |
| GRÜNE | 95,169 | 17.2 | 88,823 | 20.5 | -3.3 |
| FDP | 20,513 | 3.7 | 48,225 | 11.1 | -7.4 |
| DIE LINKE | 47,630 | 8.6 | 29,181 | 6.7 | +1.9 |
| PIRATEN | 12,284 | 2.2 | 5,097 | 1.2 | +1.0 |
| Tierschutzpartei | 5,443 | 1.0 | 2,905 | 0.7 | +0.3 |
| FREIE WÄHLER | 1,641 | 0.3 | 2,564 | 0.6 | -0.3 |
| REP | 353 | 0.1 | 1,527 | 0.4 | -0.3 |
| FAMILIE | 1,524 | 0.3 | 1,493 | 0.3 | -0.1 |
| ÖDP | 1,910 | 0.3 | 1,054 | 0.2 | +0.1 |
| PBC | 504 | 0.1 | 806 | 0.2 | -0.1 |
| Volksabstimmung | 891 | 0.2 | 720 | 0.2 | ±0.0 |
| DKP | 567 | 0.1 | 521 | 0.1 | ±0.0 |
| AUF | 398 | 0.1 | 355 | 0.1 | ±0.0 |
| CM | 201 | 0.0 | 268 | 0.1 | ±0.0 |
| BP | 122 | 0.0 | 188 | 0.0 | ±0.0 |
| PSG | 99 | 0.0 | 153 | 0.0 | ±0.0 |
| BüSo | 138 | 0.0 | 123 | 0.0 | ±0.0 |
| AfD | 33,239 | 6.0 | – | – | – |
| PRO NRW | 233 | 0.0 | – | – | – |
| MLPD | 261 | 0.0 | – | – | – |
| NPD | 2,250 | 0.4 | – | – | – |
| Die PARTEI | 5,083 | 0.9 | – | – | – |
| Political groups/individual candidates | – | – | 10,421 | 2.4 | – |