This photo combo of file images shows U.S. presidential candidates Donald Trump, left, and Hillary Clinton.
This photo combo of file images shows U.S. presidential candidates Donald Trump, left, and Hillary Clinton. Mary Altaffer and Chuck Burton AP
This photo combo of file images shows U.S. presidential candidates Donald Trump, left, and Hillary Clinton. Mary Altaffer and Chuck Burton AP

7 key dates in this extra-long election

July 29, 2016 06:43 PM