In a state Capitol often threaded with thorny partisan debate and sharp ideological branches, Colorado lawmakers and advocacy groups from opposite ends of the political spectrum have found a clearing of common ground.A suspicion of Big Data. In the House, one of the Capitol’s most progressive members, Rep. Jennifer Bacon, is partnering with one of the building’s most conservative voices, Rep. Ken DeGraaf, on a bill that would block law enforcement from buying Coloradans’ private data. In the Senate, a Democratic criminal justice reformer, Sen. Judy Amabile, and a Republican newcomer, Sen. Lynda Zamora Wilson, are joining to back legislation…