Hromek launched his political career in the summer of 2023, when he became the first candidate to run for the Saskatchewan United Party (SUP), in the August Lumsden-Morse by-election.

[8] Hromek pitched SUP as "a true conservative option" for the province, stating that the party would pursue increased privatization in the healthcare system, reintroduce standardized testing in the education system while placing greater limitations on sexual health education, and cut sales taxes and eliminate the provincial gas tax.

[10] Hromek also stated that the party was committed to removing "ideology" from schools, including "genders" and discussion of the climate crisis.

[8][9] While Hromek conceded that humans were responsible for climate change "to a certain extent," he falsely claimed that carbon dioxide had been 'demonized' as a 'pollutant'.

[12][13] Hromek stated that SUP "can hold our head high and be proud of ourselves with what we accomplished", taking credit for pressuring the Saskatchewan Party to move further right in its policies, including a late campaign promise for a bathroom bill.