The 1971 Rhineland-Palatinate state election was conducted on 21 March 1971 to elect members to the Landtag, the state legislature of Rhineland-Palatinate, West Germany.
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! 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 ±
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| width=5px style="background-color: " |
| style="text-align:left;" | Christian Democratic Union
| style="text-align:right;" | 50.0
| style="text-align:right;" | +3.3
| style="text-align:right;" | 53
| style="text-align:right;" | +4
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| style="background-color: " |
| style="text-align:left;" | Social Democratic Party
| style="text-align:right;" | 40.5
| style="text-align:right;" | +3.7
| style="text-align:right;" | 44
| style="text-align:right;" | +5
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| style="background-color: " |
| style="text-align:left;" | Free Democratic Party
| style="text-align:right;" | 5.9
| style="text-align:right;" | –2.4
| style="text-align:right;" | 3
| style="text-align:right;" | –5
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| style="background-color: " |
| style="text-align:left;" | National Democratic Party
| style="text-align:right;" | 2.7
| style="text-align:right;" | –4.2
| style="text-align:right;" | 0
| style="text-align:right;" | –4
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| style="background-color: " |
| style="text-align:left;" | German Communist Party
| style="text-align:right;" | 0.9
| 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 |}