A by-election for the Teplice Senate seat in the Czech Republic was held in 2020, following the death of Jaroslav Kubera.

[1] The election, originally scheduled for 27 and 28 March 2020,[2] was cancelled due to the COVID-19 pandemic in the Czech Republic.

Hynek Hanza received the highest number of votes and advanced to a runoff, in which he defeated Zdeněk Bergman and became the new Senator.

[12] Governor of Ústí region Oldřich Bubeníček expressed his intention to run as a Communist candidate.

[13] On 5 February 2020 Mayor of Bílina Zuzana Schwarz Bařtipánová announced her candidacy as the nominee of ANO 2011.

Tožička was previously noted for his views close to the far-left and his statement that "capitalism and right wing politics are just crimes against humanity" and "Joseph Stalin was an amateur in comparison with them.

Hanza stated that it was hard for him to accept the nomination, as Kubera was his political teacher and personal friend.

[23] Tožička's past statements on social networks led to a vote in the Czech Pirate Party about withdrawing his nomination.

Hanza was sworn in office on 22 July 2020 and became 19th Member of the Civic Democratic Party Senate Caucus.

Hanza joined Senate Committee on Spatial Development, Public Administration and the Environment.