There’s the even 8 rule... no President elected in a even numbered year ending in “8” in the last 150 years has ever been re-elected. Ulysses S. Grant elected in 1868 would have been defeated in 1872 if it hadn’t been for Reconstruction. Benjamin Harrison elected in 1888 was defeated for re-eletion in 1892 by Grover Cleveland. Howard Taft elected in 1908 was defeated for re-election in 1912 by Woodrow Wilson. Herbert Hoover elected in 1928 was defeated for re-election in 1932 by FDR. Harry Truman elected in 1948 would have been defeated in 1952 had he opted to run...