Victory/defeat margins for incumbent presidents seeking reelection.

[elperromagico]

Candidate (Year)		Margin		Reelected?

John Q. Adams (1828)		12.34%		No
Andrew Jackson (1832)		16.81%		Yes
Martin Van Buren (1840)		6.07%		No
Abraham Lincoln (1864)		10.06%		Yes
Ulysses S. Grant (1872)		11.8%		Yes
Grover Cleveland (1888)		0.8%		No +
Benjamin Harrison (1892)	3.01%		No
William McKinley (1900)		6.12%		Yes
Theodore Roosevelt (1904)*	18.83%		Yes
William Taft (1912)		18.67%		No
Woodrow Wilson (1916)		3.12%		Yes
Calvin Coolidge (1924)*		25.22%		Yes
Herbert Hoover (1932)		17.76%		No
Franklin Roosevelt (1936)	24.25%		Yes
Franklin Roosevelt (1940)	9.96%		Yes
Franklin Roosevelt (1944)	7.5%		Yes
Harry Truman (1948)*		4.48%		Yes
Dwight Eisenhower (1956)	15.4%		Yes
Lyndon Johnson (1964)*		22.58%		Yes
Richard Nixon (1972)		23.15%		Yes
Gerald Ford (1976)*		2.06%		No
Jimmy Carter (1980)		9.74%		No
Ronald Reagan (1984)		18.21%		Yes
George Bush (1992)		5.56%		No
Bill Clinton (1996)		8.51%		Yes

Average, 19th Century:		8.7%
Average, 20th Century:		13.4%
Average, Overall:		12.08%

* Elected to a full term after completing the term of another
President.
+ Won the popular vote, lost the electoral vote.