Colorado’s Democratic primaries on Tuesday will help answer a question the party has increasingly faced nationally: Are voters gravitating toward a younger, more progressive generation of leaders or sticking with established veterans?

That choice is starkly reflected in the fight to represent the state's 1st Congressional District, where incumbent Rep. Diana DeGette has been in office for as long as her challenger, a 29-year-old democratic socialist named Melat Kiros, has been alive. Likewise in the U.S. Senate race, Sen. John Hickenlooper has spent nearly three times as many years in public office as his challenger, state Sen. Julie Gonzales, who fashions herself as an “insurgent progressive.â€

The Associated Press