Former Florida governor Jeb Bush addresses the Wall Street Journal CEO Council in Washington, Dec. 1, 2014. Reuters/Jonathan Ernst

WASHINGTON – “Electability”: The magic word that moderate Republican candidates use every four years to explain why they should be the party’s presidential nominee. It’s the case that’s sure to be made on behalf of Jeb Bush and Chris Christie (if they run) — that unlike someone from the GOP’s right wing, they can beat Hillary…