Bolton backs vulnerable Senate Republicans
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Former U.S. Ambassador to the United Nations John BoltonJohn Robert BoltonIraq War looms over Trump battle with Iran Overnight Defense: Trump officials say efforts to deter Iran are working | Trump taps new Air Force secretary | House panel passes defense bill that limits border wall funds Trump officials say US efforts to deter Iran have worked MORE is throwing his support behind a handful of blue-state Republicans who are at the center of the battle for control of the Senate. 

Bolton is endorsing Republican Sens. Kelly AyotteKelly Ann AyotteSinema, Gallagher fastest lawmakers in charity race New Hampshire senator to ask 2020 Dems to back repeal of state residency law Schultz recruiting GOP insiders ahead of possible 2020 bid MORE (N.H.), Richard BurrRichard Mauze BurrOvernight Defense: Congressional leaders receive classified briefing on Iran | Trump on war: 'I hope not' | Key Republican calls threats credible | Warren plan targets corporate influence at Pentagon Key Republican 'convinced' Iran threats are credible Congressional leaders receive classified Iran briefing MORE (N.C.), Ron JohnsonRonald (Ron) Harold JohnsonBarr throws curveball into Senate GOP 'spying' probe Bipartisan group of senators introduce legislation designed to strengthen cybersecurity of voting systems Trump Jr. subpoena spotlights GOP split over Russia probes MORE (Wis.), Mark KirkMark Steven KirkEx-GOP Sen. Kirk registers to lobby The global reality behind 'local' problems Dems vow swift action on gun reform next year MORE (Ill.), John McCainJohn Sidney McCainPelosi receives John F. Kennedy Profile in Courage Award Romney: Trump 'has distanced himself from some of the best qualities of the human character' MSNBC host: Barr 'the most dangerous person' who works for Trump MORE (Ariz.) Rob PortmanRobert (Rob) Jones PortmanThe Hill's Morning Report - White House, Congress: Urgency of now around budget WANTED: A Republican with courage Companies warn Trump trade war is about to hit consumers MORE (Ohio) and Pat ToomeyPatrick (Pat) Joseph ToomeyOvernight Defense: Pick for South Korean envoy splits with Trump on nuclear threat | McCain blasts move to suspend Korean military exercises | White House defends Trump salute of North Korean general WH backpedals on Trump's 'due process' remark on guns Top GOP candidate drops out of Ohio Senate race MORE (Pa.), as well as Rep. Joe HeckJoseph (Joe) John HeckAnti-Trump Republicans better look out — voters might send you packing How endangered GOP Sen. Dean Heller is seeking to hang on Bottom line MORE (R-Nev.), who is running to replace Senate Minority Leader Harry Reid (D-Nev.), according to a release Friday from his PAC.
The PAC will contribute $5,000 to each of their campaigns. 
In addition to the Senate candidates, Bolton is backing Reps. Martha McSally (R-Ariz.), Mike Coffman (R-Colo.), Bob Dold (R-Ill.), Lee Zeldin (R-N.Y.), Elise Stefanik (R-N.Y.), John Katko (R-N.Y.), Will Hurd (R-Texas) and Barbara Comstock (R-Va.) and will donate $5,000 to each campaign. 
“In 2014 the John Bolton PAC helped elect majorities in both the House and the Senate and it is of the utmost importance that we keep these majorities intact for our next Republican president,” he said in a statement. “These Senators and Representatives have a proven track record of sponsoring and voting for legislation that promotes and protects America’s interests abroad.”
Bolton, considered an influential foreign policy voice among Republicans, has used his PAC to weigh in on national security issues in the congressional and presidential campaigns, as well as back candidates who share his views.
He is also giving $10,000 to the New Hampshire Republican Party for support of a town hall event scheduled to take place later this month. 
The former Bush administration official launched an online ad as part of a six-year buy last year in early voting states, urging primary voters to make national security a top issue.