Rand and Ron Paul are far from the first father and son to each mount a presidential campaign — in fact, they're not even the only family connection in the 2016 field. Take a look at some other political families with more than one presidential contender.
Alex Wong/Getty Images
George H.W. Bush was elected president in 1988, and his son George W. Bush was elected in 2000. Now, the son of the 41st president and the brother of the 43rd, former Florida Gov. Jeb Bush, is exploring a run to become the nation's 45th president. Pictured from left to right, George W. Bush, Jeb Bush, George H.W. Bush and Barbara Bush take a load off their feet.
John Mottern/AFP/Getty Images
Whichever Republican wins the party's 2016 nomination will likely face the first-ever female major-party nominee: Hillary Clinton. She rose to fame as first lady, the wife of former President Bill Clinton, but has since established a political career of her own that includes stints as a U.S. senator and secretary of state. Hillary and Bill Clinton are pictured.
Daniel Berehulak/Getty Images
Mitt Romney wasn't the first member of his family to run for the White House when he became the GOP nominee to take on President Barack Obama in 2012. His father, former Michigan Gov. George Romney, was a serious contender who ultimately fell short of nabbing the Republican nomination in 1968. Pictured is Mitt Romney holding a sign featuring his father, George Romney.
Joe Raedle/Getty Images
The first father and son to each win the presidency was John Adams (left), one of the nation's Founding Fathers and the second president, and his son John Quincy Adams, who was America's sixth president.
National Archives/Newsmakers | Hulton Archive/Getty Images
The relationship between two of America's most famous presidents, Teddy Roosevelt (left) and Franklin Delano Roosevelt, actually isn't as close as many assume. They were fifth cousins. Their closest tie was Franklin Roosevelt's wife, Eleanor, who was Teddy Roosevelt's niece.
Fotosearch/Getty Images | Fotosearch/Getty Images
William Henry Harrison's tenure as the nation's ninth president didn't last long. But his grandson, Benjamin Harrison (right), did serve a full four-year term as the 23rd president, serving in the late 1800s.
National Archive/Newsmakers | Hulton Archive/Getty Images
John F. Kennedy (left) is the best-known member of the massively influential Democratic political clan. But his younger brother and attorney general, Robert Kennedy, sought the party's 1968 nomination before being assassinated, too. Their brother Ted Kennedy challenged incumbent President Jimmy Cart