With the Democrats' first presidential debate set for tonight (7:30, CNN), we asked the UI's resident elections expert, Brian Gaines, for the five greatest challenges to Hillary Clinton becoming the first female commander-in-chief. With the Democrats' first presidential debate set for tonight (7:30, CNN), we asked the UI's resident elections expert, Brian Gaines, for the five greatest challenges to Hillary Clinton becoming the first female commander-in-chief: read more