The Conservative Party announced Binita Mehta-Parmar as their mayoral candidate in August 2021.

[17] Incumbent mayor Peter Taylor was unanimously reselected by the Liberal Democrats as their candidate in September 2021.

He stated that his priorities would be "to create more jobs, make the town greener and support those most in need.

"[18] The Labour Party selected Asif Khan as their candidate in November 2021.

He stated that he would focus on development in Watford, and was opposed to the number of high-rise buildings under construction.