By-elections for Chomutov and Přerov District Senate seats were held in 2017.
[1] Communist Václav Homolka has won the election in Chomutov.
This election was held when the incumbent stepped down due to health matters.
[2] Přerov election was a battle between Social Democrat Jiří Latjtoch and Communist Josef Nekl.
Lajtoch was supported by right wing parties in the second round.