1975 Rhineland-Palatinate state election explained

The 1975 Rhineland-Palatinate state election was conducted on 9 March 1975 to elect members to the Landtag, the state legislature of Rhineland-Palatinate, West Germany.

Ahead of this election, the state electoral reform on 4 July 1972 reduced the constituencies from six to four:

• Constituency One (Wahlkreis 1) was centered around Koblenz and elected 26 members.
• Constituency Two (Wahlkreis 2) was centered around Trier and elected 24 members.
• Constituency Three (Wahlkreis 3) was centered around Mainz and Ludwigshafen and elected 24 members.
• Constituency Four (Wahlkreis 4) was centered around Kaiserslautern and elected 26 members.

The seats would be allocated with d'Hondt method.|-|colspan=15| |-! style="background-color:#E9E9E9;text-align:left;" width=300px colspan=2|Party! style="background-color:#E9E9E9;text-align:right;" width=50px |Vote %! style="background-color:#E9E9E9;text-align:right;" width=50px |Vote % ±! style="background-color:#E9E9E9;text-align:right;" width=50px |Seats! style="background-color:#E9E9E9;text-align:right;" width=50px |Seats ±|-| width=5px style="background-color: " || style="text-align:left;" | Christian Democratic Union| style="text-align:right;" | 53.9| style="text-align:right;" | +3.9| style="text-align:right;" | 55| style="text-align:right;" | +2|-| style="background-color: " || style="text-align:left;" | Social Democratic Party| style="text-align:right;" | 38.5| style="text-align:right;" | –2.0| style="text-align:right;" | 40| style="text-align:right;" | –4|-| style="background-color: " || style="text-align:left;" | Free Democratic Party| style="text-align:right;" | 5.6| style="text-align:right;" | –0.3| style="text-align:right;" | 5| style="text-align:right;" | +2|-| style="background-color: " || style="text-align:left;" | National Democratic Party| style="text-align:right;" | 1.1| style="text-align:right;" | –1.6| style="text-align:right;" | 0| style="text-align:right;" | ±0|-| style="background-color: " || style="text-align:left;" | German Communist Party| style="text-align:right;" | 0.5| style="text-align:right;" | –0.4| style="text-align:right;" | 0| style="text-align:right;" | ±0|- | style="background-color: " || style="text-align:left;" | Others| style="text-align:right;" | 0.3| style="text-align:right;" | N/A| style="text-align:right;" | 0| style="text-align:right;" | N/A|- style="background: #E9E9E9"! style="text-align:left;" colspan=2| Total| 100.0| —| 100| ±0|-| colspan=9 style="text-align:left;" | Source: parties-and-elections.de|}