List of Republicans who opposed the Donald Trump 2016 presidential campaign

This is a list of Republicans and conservatives who announced their opposition to the election of Donald Trump, the 2016 Republican Party nominee and eventual winner of the election, as the president of the United States.

It includes Republican presidential primary election candidates that announced opposition to Trump as the nominee.

All candidates signed a pledge to eventually support the party nominee.

The following refused to honor it after Trump became the Republican presidential nominee.

Sitting Former Research on the Never Trump movement shows that Mormon and female Republicans were the most likely groups to oppose Trump's candidacy while non-Mormon and male Republicans were the most supportive.

Former President George H. W. Bush
Former President George W. Bush
Former Florida Governor Jeb Bush
Senator Lindsey Graham
Former Secretary of State Colin Powell
Former Secretary of State Condoleezza Rice
Ohio Governor John Kasich
Former Massachusetts Governor and 2012 nominee for President Mitt Romney
Actor and former California Governor Arnold Schwarzenegger
Arizona Senator and 2008 nominee for President John McCain
Former Washington Senator Slade Gorton
Michigan U.S. Representative Justin Amash
Nevada U.S. Representative and 2016 nominee for U.S. Senate Joe Heck
Former Chief of Staff to the Vice President and founder of The Weekly Standard Bill Kristol
Former First Lady Laura Bush
Conservative commentator George Will
Hewlett Packard Enterprise CEO Meg Whitman