partisan

Americans are more divided along ideological lines - and animosity between Democrats and Republicans is deeper and more extensive - than at any time in the past 20 years, a new report from the Pew Research Center shows.

While a new Gallup Poll finds that voters 65 and older have moved from "a reliably Democratic to a reliably Republican group" over the past two decades, voters in the next-oldest age bracket - 50 to 64 - haven't followed suit and still show an outright preference for the Democratic Party.