In the 2019 general election, the Liberal Democrats won St Albans for the first time since the party's formation, defeating the incumbent Conservative Member of Parliament.

[19] The Conservatives pledged to achieve carbon neutrality by 2050, and that by 2030, Hertfordshire County Council would be carbon-neutral and waste would no longer be sent to landfill.

[20] The Liberal Democrats pledged to achieve carbon neutrality by 2030 by introducing solar powered lighting on walking and cycling routes, and a £2.5 million fund for charging stations for electric vehicles.

[23] Labour supported an increase in the number of late night buses, and would reinstate bus subsidies.

Leader of the Labour group Judi Billing stated that she believed that a 20 mph speed limit should be the default on roads in Hertfordshire.

[23] The Green Party and the Liberal Democrats also supported the introduction of a default 20 mph speed limit on residential roads.

Hertfordshire County Council advised that the ballot boxes should not be opened for 24 hours after the polls closed to prevent the spread of COVID-19.