<b>Full coverage:</b> Ron Paul

Nati Harnik / Associated Press

Ron Paul
Rep. R-Texas | Age 76
Declared May 13, 2011

This is Paul’s third run for the White House: He was the Libertarian Party’s candidate in 1988 and mounted a bid as a Republican in 2008.

The obstetrician and gynecologist is in his 14th House term. He has a loyal but limited following for his proposals to dramatically reduce government spending and management of the economy. He is an advocate of returning to the gold standard and shuttering the Federal Reserve.

Paul is married with five children, one of whom, Rand Paul, won a Senate seat in Kentucky in 2010.

— Associated Press