Are Democrats and Republicans talking about the same country?

Donald Trump, left, and Jeb Bush at Wednesday’s Republican presidential debate, where the topics were heavy on national security and cultural issues. (Mark J. Terrill/AP) To the Democratic candidates, the 2016 presidential campaign is about shrinking the gap between rich and poor; combating climate change; and expanding voting rights, gay rights and workplace equality for women.

To listen to the Republican candidates is to hear an entirely different campaign — one that centers on defeating Islamic State terrorists, deterring a nuclear Iran, restricting abortion, and debating whether to deport illegal immigrants and construct a wall to keep them out.

At a […]