Percentage of votes
| Specification | Votes 2014 | Votes 2009 | Diff. on 2009 in p.p. | ||
|---|---|---|---|---|---|
| Number | % | Number | % | ||
| Persons entitled to vote | 4,422,994 | – | 4,402,792 | – | – |
| Voters | 1,867,868 | 42.2 | 1,669,822 | 37.9 | +4.3 |
| Invalid | 24,314 | 1.3 | 30,735 | 1.8 | -0.5 |
| Valid | 1,843,554 | 98.7 | 1,639,087 | 98.2 | +0.5 |
| CDU | 564,294 | 30.6 | 596,878 | 36.4 | -5.8 |
| SPD | 558,541 | 30.3 | 400,623 | 24.4 | +5.9 |
| GRÜNE | 238,657 | 12.9 | 246,535 | 15.0 | -2.1 |
| FDP | 74,773 | 4.1 | 207,253 | 12.6 | -8.6 |
| DIE LINKE | 103,573 | 5.6 | 63,407 | 3.9 | +1.7 |
| REP | 7,698 | 0.4 | 20,246 | 1.2 | -0.8 |
| PIRATEN | 27,770 | 1.5 | 14,807 | 0.9 | +0.6 |
| Tierschutzpartei | 21,916 | 1.2 | 14,108 | 0.9 | +0.3 |
| FREIE WÄHLER | 16,080 | 0.9 | 11,781 | 0.7 | +0.2 |
| FAMILIE | 8,602 | 0.5 | 7,854 | 0.5 | ±0.0 |
| Volksabstimmung | 6,620 | 0.4 | 4,481 | 0.3 | +0.1 |
| PBC | 3,846 | 0.2 | 4,365 | 0.3 | -0.1 |
| ÖDP | 6,185 | 0.3 | 2,698 | 0.2 | +0.2 |
| CM | 1,931 | 0.1 | 2,262 | 0.1 | ±0.0 |
| AUF | 3,116 | 0.2 | 2,058 | 0.1 | ±0.0 |
| DKP | 1,603 | 0.1 | 1,395 | 0.1 | ±0.0 |
| BP | 992 | 0.1 | 1,192 | 0.1 | ±0.0 |
| BüSo | 535 | 0.0 | 556 | 0.0 | ±0.0 |
| PSG | 499 | 0.0 | 435 | 0.0 | ±0.0 |
| AfD | 168,506 | 9.1 | – | – | – |
| PRO NRW | 904 | 0.0 | – | – | – |
| MLPD | 726 | 0.0 | – | – | – |
| NPD | 13,869 | 0.8 | – | – | – |
| Die PARTEI | 12,318 | 0.7 | – | – | – |
| Political groups/individual candidates | – | – | 36,153 | 2.2 | – |