Bob Dole: YEA (formerly UNDECIDED)
The former Senate majority leader and 1996 GOP presidential nominee endorsed Trump on May 6. He will also be the only living GOP nominee to attend the RNC. (May 6, 2016.) Dole previously would not commit to voting for Trump but said in January that Trump would be preferable to Cruz. (May 5, 2016)
John Boehner: YEA
The former speaker, who says he and Trump are texting buddies, told an audience at Stanford University that hed back Trump in the general election. (April 28, 2016)
Trent Lott: YEA
The former Senate majority leader told The Clarion-Ledger that he will back Trump, despite some reservations. (May 4, 2016)
Tom DeLay: UNDECIDED
Asked by reporter Jon Ward whether Clinton or Trump was worse, the former House majority leader responded, I cant answer that right now. (June 21, 2016)
DeLay hadnt spoken out since Trumps ascension, but was highly critical of him during the primary: We have got to stop Trump. Whatever it takes without cheating or violating the rules of the Republican primaries, he told Newsmax.
Dick Cheney: YEA
The former vice president blasted Trump during the primary over his stance on 9/11, and said he sounds like a liberal Democrat, but he now says he will back the nominee. (May 6, 2016)
Newt Gingrich: YEA
The former speaker of the House did not formally endorse Trump during the primary, but he has repeatedly praised the mogul and his vision, and is said to be a contender for a position in a Trump administration.
LOTS more at link
http://www.theatlantic.com/politics/archive/2016/08/where-republicans-stand-on-donald-trump-a-cheat-sheet/481449/