He had two. George Clinton was VP during his first term, dying in office in April 1812. He was the first VP to die in office and one of only two to serve as VP to two different Presidents, as he had also been VP during Jefferson's second term. Madison' second VP was Elbridge Gerry of Massachusetts, who also died in office in November 1814, making Madison the only President to have both his VP's fail to finish their terms. Gerry is also remembered for a salamander-shaped legislative district which he drew earlier in his career, giving rise to the term "gerrymander" (though he did not invent the practice itself, which was far older).
George Clinton: 1809-1812
Elbridge Gerry: 1813-1814
James Madison was the only president to have two vice presidents that both died while in office.
The president when George Dallas was the Vice President was James K. Polk.
Breckenridge served as vice-president under President james Buchanan (1857-1861),
John C. Breckinridge was the Vice President under President James Buchanan from1857-1861.
George Clinton was the Vice President from 1809-1812 under President James Madison (1809-1817)George Clinton was Vice President from 1809-1812 under President James Madison (March 4, 1809 March 4, 1817)
John C. Breckinridge was Vice President from 1857-1861 under President James Buchanan.
United States Vice President John C. Breckinridge was Vice President under James Buchanan.
James S. Sherman was the Vice President from 1909-1912 under President William Howard Taft (1909-1913)
vice president for James cox James Cox was never president and FDR was never vice president
James Monroe was never a Vice President.
US President James Madison served as Secretary of State under Thomas Jefferson. There is no records showing him to have served as a Vice President.
1881, under James Garfield.
James S. Sherman was the veep under Taft in 1909.