DURHAM, NC - SEPTEMBER 6: Former U.S. President Bill Clinton speaks at the Community Family Life & Recreation Center at Lyon Park on September 6, 2016 in Durham, North Carolina. Clinton spoke on wife, Democratic presidential nominee Hillary Clinton's plan for the economy. (Photo by Sara D. Davis/Getty Images)

DURHAM, NC - SEPTEMBER 6: Former U.S. President Bill Clinton speaks at the Community Family Life & Recreation Center at Lyon Park on September 6, 2016 in Durham, North Carolina. Clinton spoke on wife, Democratic presidential nominee Hillary Clinton's plan for the economy. (Photo by Sara D. Davis/Getty Images)

DURHAM, NC - SEPTEMBER 6: Former U.S. President Bill Clinton greets guests at the Community Family Life & Recreation Center at Lyon Park on September 6, 2016 in Durham, North Carolina. Clinton spoke on wife, Democratic presidential nominee Hillary Clinton's plan for the economy. (Photo by Sara D. Davis/Getty Images)

DURHAM, NC - SEPTEMBER 6: Former U.S. President Bill Clinton speaks at the Community Family Life & Recreation Center at Lyon Park on September 6, 2016 in Durham, North Carolina. Clinton spoke on wife, Democratic presidential nominee Hillary Clinton's plan for the economy. (Photo by Sara D. Davis/Getty Images)

DURHAM, NC - SEPTEMBER 6: Former U.S. President Bill Clinton waves to the audience at the Community Family Life & Recreation Center at Lyon Park on September 6, 2016 in Durham, North Carolina. Clinton spoke on wife, Democratic presidential nominee Hillary Clinton's plan for the economy. (Photo by Sara D. Davis/Getty Images)

DURHAM, NC - SEPTEMBER 6: Former U.S. President Bill Clinton peruses Durham's Burt's Bees lotions on the shelf during a visit to the Durham Co-Op before his campaign stop on September 6, 2016 in Durham, North Carolina. Clinton was scheduled to speak in Durham at the Community Family Life and Recreation Center on wife, Democratic presidential nominee Hillary Clinton's plan for the economy. (Photo by Sara D. Davis/Getty Images)

DURHAM, NC - SEPTEMBER 6: Former U.S. President Bill Clinton tours the Durham Co-Op on September 6, 2016 in Durham, North Carolina. Clinton was scheduled to speak in Durham at the Community Family Life and Recreation Center on wife, Democratic presidential nominee Hillary Clinton's plan for the economy. (Photo by Sara D. Davis/Getty Images)

DURHAM, NC - SEPTEMBER 6: Former U.S. President Bill Clinton learns about locally produced wines from general manager Leila Wolfrum while holding a four pack of Durham's Ponysaurus Beer under his arm at the Durham Co-Op on September 6, 2016 in Durham, North Carolina. Clinton was scheduled to speak in Durham at the Community Family Life and Recreation Center on wife, Democratic presidential nominee Hillary Clinton's plan for the economy. (Photo by Sara D. Davis/Getty Images)