The Colorado Supreme Court will decide whether U.S. Rep. Doug Lamborn stays on the primary ballot, or if a legal challenge over petition signatures will derail the Colorado Springs Republican's bid for a seventh term. The high court on Monday agreed to review an appeal arguing that some of the signatures that secured Lamborn a place on the June primary ballot were gathered by paid circulators who don't qualify as Colorado residents, as the law requires. Lamborn is facing primary challenges from four Republicans - El Paso County Commissioner Darryl Glenn, state Sen.