It was the “no” vote heard across Colorado — and beyond. U.S. Sen. Cory Gardner — whose every word and action is being dissected by Democrats eager to oust him from office — backed President Donald Trump on March 14 when he declined to join a dozen of his Republican colleagues blocking the president’s declaration of an emergency along the U.S.-Mexico border. Politicos on the left and the right said the predictable things, while everyone else was left to wonder why Gardner did it and what, if anything, it means for his re-election chances in 2020. Strategists and pollsters on both sides of the aisle, including those who know Gardner, say the junior senator from Colorado, as politically astute as any elected official in the state, carefully weighed both the practical and political implications before settling on a decision.