History will remember 2015 as the year when The Republican Party As We Knew It was destroyed by Donald Trump. An entity called the GOP will survive — but can never be the same.Am I overstating Trump’s impact, given that not a single vote has been cast? Hardly. I’m not sure it’s possible to exaggerate how the Trump phenomenon has torn the party apart, revealing a chasm between establishment and base that is far too wide to bridge with stale Reagan-era rhetoric. Can you picture the Trump legions meekly falling in line behind Jeb Bush or Sen. Marco Rubio (Fla.)? I can’t either.