Table:
text: United States Presidents and control of Congress
Presidents by congressional control and terms won/served
Presidents by congressional control and terms won/served
_ President President_s_Party Senate_with Senate_opposed House_with House_opposed Years_served Elections_won_
21 Chester Arthur Republican 4 0 2 2 4 0
22 Grover Cleveland Democratic 0 4 4 0 4 1
23 Benjamin Harrison Republican 4 0 2 2 4 1
24 Grover Cleveland Democratic 2 2 2 2 4 1
25 William McKinley Republican 4 0 4 0 4 2
26 Theodore Roosevelt Republican 8 0 8 0 8 1
27 William Taft Republican 4 0 2 2 4 1
28 Woodrow Wilson Democratic 6 2 6 2 8 2
29 Warren Harding Republican 2 0 2 0 2 1
30 Calvin Coolidge Republican 6 0 6 0 6 1
31 Herbert Hoover Republican 4 0 2 2 4 1

Question: Of the Presidents of the United States and control of Congress, how many elections has William Mckinley won?