In an era of hyper-political partisanship and a growing number unsatisfied voters, a group of about 250 politicians, strategists and activists plan to gather in Denver this weekend to make it easier to elect independent candidates. At a downtown Denver hotel, attendees of the Unite America Summit may participate in conversations titled “Crashing the party,” “Unrig the system: How can independents advance reform?” and “What is an independent’s most compelling pitch?” The political organization behind the conference is Unite America, which has the long-term goal of “disrupting” the nation’s political duopoly and electing more independent candidates to statehouses and Congress to bridge the yawning partisan divide.