Nevada stays with caucus system

DENVER — Nevada is keeping its caucuses for selecting presidential nominees, disappointing supporters of several Republican presidential contenders who had hoped to shift the early-voting state to a system of primaries. Caucuses are considered favorable to candidates who have a network of highly motivated activists, and in Nevada they are seen as especially favoring Kentucky Sen. Rand Paul because of his family’s support in the state Republican party. Republican Gov. Brian Sandoval backed l