The Glamorgan County Council election, 1910 was the eighth contest for seats on this authority. It was preceded by the 1907 election and followed by the 1913 election.
As in most parts of Wales, the Liberal Party was once again triumphant and won a majority of the seats. The Conservatives made a further advancein the western part of the county where they also held on in a number of industrial wards where the influence of paternalism remained strong. A more striking factor was the advance of Labour candidates in several areas and there were also a number of Liberal members who were returned under a 'progressive' banner with support from the labour movement.
There were numerous boundary changes resulting from the secession of Merthyr Tydfil from Glamorgan to create a new County Borough. There were boundary changes at Maesteg, leading to the creation of a second seat.
All eleven retiring aldermen were Liberals, or Lib-Lab members as the Conservatives and their allies had been denied any seats on the aldermanic bench since 1901.
Most seats were contested. In the western part of the county, industrialists standing as Conservatives continued to hold their found in some wards.
There were only two contested elections in the Aberdare district, and both were again more personal than political.
There were a number of contested elections in this area.
In these areas the Conservatives again performed well, mainly at the expense of the Liberals.
J.M. Smith held on to the seat he had held since 1889, increasing his majority over Labour. The result was said to have been greeted by a large crowd.
Boundary Change. The Labour candidate had entered the fray at the last moment causing a three-cornered contest in this new ward.
In a contest between two Liberals, John Howell, first elected in 1895, was defeated by Gwilym Treharne who had opposed him on several occasions in the past.
Randall was again returned unopposed, with the Liberals deciding not to oppose him.
Boundary Change. The previous Caerphilly division was divided.