Former President Bill Clinton gave a long speech in Philly Tuesday designed to introduce voters to a side of his wife the country doesn't know.
The former President has stumped for plenty of other candidates, but now he faces a new challenge: going to bat for his wife of more than 40 years.
Candidate spouses and the role they play on the campaign trail has evolved in recent decades: each must find a balance between personal and political.
For more on how that role has changed over the years, Take Two spoke to Kate Andersen Brower, author of the book "First Women: The Grace and Power of America's Modern First Ladies."
Press the blue play button above to hear the full interview.