The list of Republican and Conservative public figures who refuse to endorse and support Donald Trump is massive. Following is an incomplete but extensive list.
It includes former elected Republican officials such as:
Senator Norm Coleman of Minnesota
Senator Gordon Humphrey of New Hampshire
Senator Larry Pressler of South Dakota
Senator Olympia Snowe of Maine
Governor Jeb Bush of Florida
Governor William Milliken of Michigan]
Governor George Pataki of New York
Governor Tom Ridge of Pennsylvania
Governor Christine Todd Whitman of New Jersey
Governor Mitt Romney of Massachusetts
Congressman Ron Paul of Texas
Congressman Chris Shays of Connecticut
Congressman J C Watts of Oklahoma
Congressman Vin Weber of Minnesota
It includes elected Republican officials such as:
Senator Susan Collins of Maine
Senator Lindsey Graham of South Carolina
Senator Mark Kirk of Illinois
Senator Ben Sasse of Nebraska
Congressman Charlie Dent of Pennsylvania
Congresswoman Ileana Ros-Lethinen of Florida
Congressman (and former Governor) Mark Sanford of South Carolina
Governor Charlie Baker of Massachusetts
Governor Larry Hogan of Maryland
Governor John Kasich of Ohio
Conservative Spokesmen
Glenn Beck
Mona Charen
Erick Erickson
Jonah Goldberg
Stephen Hayes
Bill Kristol
Jennifer Rubin
Ben Shapiro
Charlie Sykes
George Will
National Review editorially
The Weekly Standard editorially
Conservative and Republican Newspapers
Dallas Morning News
Arizona Republic
Cincinnati Enquirer
Detroit News
Houston Chronicle
New Hampshire Union Leader
Chicago Tribune
National Security Officials
Richard Armitage
Michael Chertoff
Michael Hayden
Robert Kagan
John Negroponte
Brent Scowcroft
Presidential Famiilies
George H. W. Bush
Barbara Bush
George W. Bush
Laura Bush
Jeb Bush
Ron Reagan Jr
Michael Reagan