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.”And a similar, if smaller, divide separates the two Democrats competing for the U.S. House in the state’s lone swing district, a seat that will be one of the keys to controlling the chamber in President Donald Trump’s final two years in office.In the Democratic primary for governor, however, the opposite is the case: Colorado Attorney General Phil Weiser and U.S. Sen. Michael Bennet have struggled to meaningfully distinguish their agendas. Instead, the two Democrats have accused each other of pulling punches against Trump.