^Zentrum used the name Christliche Volkspartei along with Zentrumspartei around this time.
^Including 111,663 votes in constituency #21 (Koblenz/Trier) for the list "German Democratic Party and German People's Party".
^Including 131,950 votes in constituency #22 (Düsseldorf 1–5) for the list "German National People's Party, German People's Party and National Association Essen".
^Including 164,687 votes in constituency #18 (Arnsberg) for the list "German People's Party and German National People's Party".
^Zentrum ran a joint list with the DHP in constituency #16 (Hannover-Hildesheim-Lüneburg). Five DHP members and two Zentrum members were elected on this list.
^The DNVP ran on a joint list with the DVP in constituency #18 (Arnsberg). Four DVP members and no DNVP members were elected on this list.
^The DVP ran on a joint list with the DDP in constituency #21 (Koblenz/Trier). Two DDP members and no DVP members were elected on this list.
^The DVP ran on a joint list with the DNVP in constituency #22 (Düsseldorf 1–5). Three DNVP members and no DVP members were elected on this list.
^Zentrum was the only party that fielded a list in constituency #24 (Sigmaringen).