A USA Today analysis of the nation’s 3,113 counties shows “a striking realignment since 2012 that has intensified the partisan leanings in states across the country, leaving only a handful where the outcome of the Nov. 5 presidential election remains in doubt.” “The hardening of the country’s political lines has contributed to other consequences, too, including one-party control of the governorship and state legislature in 40 of the 50 states.