He contested Bethnal Green South West alongside his running mate Stewart Headlam and they were both elected .
Harris next contested the London County Council election , 1907 for the Progressive Party , the municipal wing of the Liberal Party .
Harris contested Bethnal Green South West alongside Harris ' running mate Stewart Headlam and they were both elected .
Harris next contested the London County Council election , 1907 for the Progressive Party , the municipal wing of the Liberal Party .