After joining the
Independent Labour Party around 1915, On 13 December 1921, Dollan was elected in a by-election as the councillor for
Springburn. Dollan successfully stood again for Council in 1922 and held the position until 1928. Dollan became a
Justice of the Peace in 1928. During 1924, Dollan wrote in
The Sunday Post about the amendment of the
Representation of the People Act 1918, clearly linking domestic interests as a good reason for all women to have the franchise (as this Act gave the vote to certain women only). Dollan was the first Labour candidate to contest
Dumfriesshire in the
United Kingdom general election of 1924, however she was unsuccessful. She served on the
Labour Party National Executive from 1922 to 1928 and resumed her seat in the 1930s after a period of illness prevented her from participating in political activities. In 1933, she spoke at the National Conference of Labour Women, arguing that there should be more women candidates for the Labour Party. Dollan fought against the removal of the ILP from the Labour Party, however following the split she was appointed the first president of the
Scottish Socialist Party's women's council in 1933. The election was ultimately contested by
David Cleghorn Thomson. Dollan's husband Patrick served as
Lord Provost of Glasgow from 1938 to 1941 however when she attended events with him, Agnes retained her own identity.
Harry McShane wrote in his autobiography: ==Anti-war activism==