Bernie Sanders mocks Trump: ‘He could change his mind tomorrow’
Senate GOP deeply concerned over Trump effect
Senate Republicans are deeply concerned that Donald Trump will cost them their majority, despite private assurances from leaders that voters opposed to the presumptive GOP presidential nominee will split their ballots.
A Washington Post-ABC News poll published last week shows Trump's unfavorable rating has hit new a high, with 7 out of 10 respondents nationwide viewing him negatively.
One Republican senator facing a competitive re-election said he and his colleagues are "very concerned."
"There's deep, deep concern," he added.
Republicans have to defend 24 seats while Democrats only have to protect 10. Six of the vulnerable GOP seats are in states that President Obama won in 2008 and 2012.
Almost every day, Republican senators see new evidence of Trump's lack of mainstream appeal.
Major companies such as Wells Fargo and UPS, which sponsored the 2012 Republican convention in Tampa, are skipping this summer's event in Cleveland.
"There's a lot of anxiety out there," said a second Senate Republican. "People are trying to figure out what's going on in the political climate, what it means to us, to me. There's anxiety."
Yet there's a growing sense of resignation that not much can be done to change their presumptive nominee.
At a meeting of Senate Republicans at the National Republican Senatorial Committee headquarters Wednesday, Trump didn't even come up for discussion, according to two lawmakers who participated.
Republican leaders are trying to buck up their nervous colleagues by arguing they can win re-election even if Trump crashes and burns.
Senate Majority Leader Mitch McConnell (R-Ky.) predicted on Fox News that this will be a "ticket-splitting kind of year."
He is urging vulnerable incumbents to distance themselves from Trump and run their own races.
Republican Sen. Mark Kirk (Ill.), the most endangered Senate incumbent, has taken that advice and withdrawn his endorsement.
"He is too bigoted and racist for the land of Lincoln," he told The Hill, adding that other Senate Republicans "could" be concerned about his effect on their own contests.
NRSC Chairman Roger Wicker (Miss.) said Trump won't necessarily have a negative impact on Senate candidates.
"That hasn't happened historically," he said of fears that the nominee will create headwinds in Senate races. "Our candidates look very, very good. We'll take [the races] one by one."
Other Republicans make the same argument.
"I believe that people vote individually, evaluating each race. We have very strong Senate candidates and they will run their own races," said Sen. Susan Collins (R-Maine), who is not up for reelection this year.
In recent elections, however, the macro political environment has had as big an impact on results and candidate quality, experts say.
"They're whistling past the graveyard," said Larry Sabato, director of the University of Virginia's Center for Politics, when asked about GOP skepticism of a presidential coattail effect in 2016. "To deny there's coattails is laughable. It's a very polarized era."
In a report published last year, UVA's Center for Politics observed the correlation between presidential and Senate voting exceeded 80 percent in the past two presidential elections.
Democrats picked up two Senate seats when Obama was re-elected in 2012, winning races in five Republican-leaning states: Indiana, Missouri, Montana, North Dakota and West Virginia. They also won in the swing states of Florida, Ohio and Virginia.
Democrats won a net gain of eight Senate seats in 2008, when Obama first captured the White House.
Karl Rove, who served as former President George W. Bush's top political advisor, predicted in December that the top of the ticket will have a major influence on November's Senate races.
"In the past two presidential contests, the Republican ticket's downward pull on the party's Senate candidates was pronounced," he wrote in a Wall Street Journal op-ed, noting that Senate Republican incumbents lost in New Hampshire and Oregon in 2008 despite running ahead of their presidential nominee, John McCain.
Senate Republicans picked up four seats when Bush won re-election in 2004.
In 2014, losing Senate Democratic incumbents such as former Sen. Mark Begich (Alaska) blamed their losses on President Obama's unpopularity.
Begich, who was thought to have run a near-perfect race, observed to the Alaska Dispatch that the Republican strategy that year was to make every race about Obama.
Republicans say this year will be different because unlike in past presidential elections, their candidates won't embrace the nominee.
Sen. Kelly Ayotte (R), who has a tough race in New Hampshire, for example, has emphasized that she will support but not endorse Trump.
Democratic strategists say it will be impossible for Republican candidates to inoculate themselves from Trump's unpopularity. The Democratic Senatorial Campaign Committee has launched a campaign branding the GOP as "the party of Trump."
Adam Jentleson, a senior aide to Senate Democratic Leader Harry Reid (Nev.), on Thursday called Sen. John McCain (R-Ariz.) and his fellow Republicans "puppets of Trump" after McCain blamed Obama's national security policies for the mass shooting in Orlando. McCain is facing the toughest race of his Senate career,
Trump's penchant for shooting from the hip and sparking media frenzies has overshadowed Republican accomplishments in Congress.
Senate Republicans were hoping to spend the week of June 6 discussing the disappointing May jobs report, which showed employers added only 38,000 workers to their payrolls.
Instead, Trump's comments attacking a Mexican-American judge presiding over a lawsuit against Trump University dominated the political debate, putting vulnerable Senate incumbents on the defensive.
"If he had just said nothing and let the jobs report speak for him, it would have been a great week," said another GOP senator facing a tough re-election.
Trump's most stomach-churning characteristic, according to many Senate Republicans, is his sheer unpredictability.
He surprised allies by tweeting Wednesday that he would be meeting with the National Rifle Association about not allowing people on terror watch lists from buying guns, a position that most Senate Republicans oppose without sufficient due-process safeguards.
Trump's unexpected statement immediately put Republicans who voted in December against legislation sponsored by Sen. Dianne Feinstein (D-Calif.) banning people on the no-fly list from buying guns on the defensive.
The entire Senate GOP conference except for Kirk voted against it.