 Having defeated the Liberal candidate by won vote only in 1904, the sitting member, Frank Gilbertson was now opposed by a Labour candidate, Johnny James, check weigher at Cwmgors Colliery.James fared less well than his predecessor, however, in seeking to oust Gilbertson.The seat was now known as Pontypridd and Rhondda

Penygraig appears to be a new ward.