Table:
text: Stockport (UK Parliament constituency)
MPs 1832–1950
MPs 1832–1950
Election _1st_Member _1st_Party _2nd_Member _2nd_Party
February 1893 George Whiteley Conservative Sir Joseph Leigh Liberal
1895 George Whiteley Conservative Beresford Valentine Melville Conservative
1900 George Whiteley Liberal Beresford Valentine Melville Conservative
1900 Sir Joseph Leigh Liberal Beresford Valentine Melville Conservative
1906 James Duckworth Liberal George Wardle Labour
January 1910 Spencer Leigh Hughes Liberal George Wardle Labour
1918 Spencer Leigh Hughes Coalition Liberal George Wardle Coalition Labour
1920 William Greenwood Coalition Conservative Henry Fildes Coalition Liberal
1922 William Greenwood Conservative Henry Fildes National Liberal
1923 William Greenwood Conservative Charles Royle Liberal
1924 William Greenwood Conservative Samuel Hammersley Conservative
1925 Arnold Townend Labour Samuel Hammersley Conservative
1931 Alan Dower Conservative Samuel Hammersley Conservative

text: Stockport (UK Parliament constituency)
MPs 1832–1950
MPs 1832–1950
Election _1st_Member _1st_Party _2nd_Member _2nd_Party
1935 Sir Arnold Gridley Conservative Norman Hulbert Conservative
1950 Constituency abolished Constituency abolished Constituency abolished Constituency abolished

text: Stockport (UK Parliament constituency)
MPs 1832–1950
MPs 1832–1950
Election _1st_Member _1st_Party _2nd_Member _2nd_Party
1832 Thomas Marsland Tory Party John Horatio Lloyd Liberal
1835 Thomas Marsland Tory Party Henry Marsland Liberal
1841 Richard Cobden Radical Henry Marsland Liberal
July 1847 Richard Cobden Radical James Heald Conservative
December 1847 James Kershaw Liberal James Heald Conservative
1852 James Kershaw Liberal John Benjamin Smith Liberal
May 1864 Edward William Watkin Liberal John Benjamin Smith Liberal
1868 William Tipping Conservative John Benjamin Smith Liberal
1874 Charles Henry Hopwood Liberal Frederick Pennington Liberal
1885 Louis John Jennings Conservative William Tipping Conservative
1886 Louis John Jennings Conservative Sydney Gedge Conservative
1892 Louis John Jennings Conservative Sir Joseph Leigh Liberal

Question: What is the 1st party if the 2nd party is "Conservative", if the 2nd member is "Samuel Hammersley" and if the election is "1931" for Stockport (UK Parliament constituency)?