undefined — Delegates from New York hold signs in support of Hillary Clinton, 2016 Democratic presidential nominee, during the Democratic National Convention (DNC) in Philadelphia, Pennsylvania, U.S., on Tuesday, July 26, 2016. Democrats began their presidential nominating convention Monday with a struggle to fully unite the party, following a dramatic day of internal squabbling and protests.

Photographer: Andrew Harrer/Bloomberg

Delegates from New York hold signs in support of Hillary Clinton, 2016 Democratic presidential nominee, during the Democratic National Convention (DNC) in Philadelphia, Pennsylvania, U.S., on Tuesday, July 26, 2016. Democrats began their presidential nominating convention Monday with a struggle to fully unite the party, following a dramatic day of internal squabbling and protests.

Photographer: Andrew Harrer/Bloomberg

The 2016 Democratic National Convention in Pictures

This week, the Democrats descend on Philadelphia, the historic City of Brotherly Love, for their convention. The party is seeking to hold on to the presidency in a country that's becoming younger, more ethnically diverse, less religious, and more liberal on a variety of issues.

Kenneth Hughes