Brent Scowcroft is perhaps the most distinguished foreign policy expert alive today, having served as the National Security Advisor for Presidents Gerald Ford and George H. W. Bush, and having advised President Obama on his choice for a national security team. Scowcroft announced that he is endorsing Hillary Clinton.
A list of 50 Republican CEOs and business experts are supporting Clinton. This includes Mike Jackson, CEO of AutoNation, the largest auto retailer in the U.S., who said he is no longer a Republican but changed his voter registration to Independent.
Conservative columnist and TV political pundit, George Will, said this about today's Republican Party: "This is not my party." Will has changed his registration to "unaffiliated." That's pretty big. George Will fancied himself as the intellectual conservative of the Republicans in the mold of William F. Buckley, who also would not recognize the Republican Party of today.
Update: Add to the list of prominent Republicans supporting Clinton, just reported late Saturday night: Former Secretary of Treasury under George W. Bush, Hank Paulson.