He was elected a member of the CHamber of Deputies on 21 October 2017 and lost his Senate seat as a result.

[3] Hlavatý entered politics in 2014 when he ran in Senate election for Trutnov seat.

Hlavatý received 26% in the first round and 60% in run-off and defeated TOP 09 nominee Adolf Klepš.

Hlavatý stated that he didn't know he will lose his Senate seat and expected that he will be allowed to choose if he wants to be a Senato or Deputy.

[8][9] He gave up his seat in the Chamber of Deputies on 24 November 2017 and was replaced by Eva Matyášová.