Senate Republicans who are up for reelection next year are sticking as close to President TrumpDonald John TrumpColorado governor signs national popular vote bill into law Tree of Life rabbi responds to New Zealand attack: Like 'a horror film all over again' Graham says he'll probe Rosenstein's 25th Amendment remarks MORE as possible, especially on his signature issue of illegal immigration and border security.
Even as some Senate Republicans broke with Trump over his emergency declaration to build a wall on the Mexican border, most of those running for reelection next year backed Trump — a sign of their fear of Trump-fueled primary opponents.
Only one of the 12 Republicans who voted on Thursday for a Democratic-backed resolution overturning Trump’s emergency declaration is up for reelection next year: Sen. Susan CollinsSusan Margaret CollinsThe Hill's Morning Report — Trump readies first veto after latest clash with Senate GOP Overnight Defense: Senate rejects border emergency in rebuke to Trump | Acting Pentagon chief grilled on wall funding | Warren confronts chief over war fund budget 12 Republican senators defy Trump on emergency declaration MORE (R), who has a well-established reputation in Maine as an independent.
Republicans running in other swing states who arguably might have benefited from distancing themselves from Trump, such as Sens. Cory GardnerCory Scott GardnerThe Hill's Morning Report — Trump readies first veto after latest clash with Senate GOP Denver Post editorial board says Gardner endorsement was 'mistake' Overnight Health Care — Presented by PCMA — Trump health chief reveals talks with states on Medicaid block grants | New head of FDA faces tough test | Trump officials defends work requirements in court MORE (Colo.), Martha McSallyMartha Elizabeth McSallyShanahan grilled on Pentagon's border wall funding McSally to back Trump on emergency declaration GOP senator requests meeting with Air Force leaders to discuss sexual assault MORE (Ariz.) and Thom TillisThomas (Thom) Roland TillisThe Hill's Morning Report — Trump readies first veto after latest clash with Senate GOP 12 Republican senators defy Trump on emergency declaration Senate rejects border declaration in major rebuke of Trump MORE (N.C.), stuck with him.
The tone was set early by Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellOvernight Energy: Students around globe demand climate action | EPA bans consumer sales of deadly chemical in paint strippers | Green New Deal set for Senate vote The Hill's Morning Report — Trump readies first veto after latest clash with Senate GOP McConnell tees up vote on Green New Deal MORE (R-Ky.).
The GOP leader, who is up for reelection, endorsed Trump’s national emergency declaration last month despite initially warning Trump against the move, according a Feb. 1 Washington Post report.
GOP strategists said Republicans have little choice given the potency of the issue of border security with Trump’s base.
“I think what they’ve seen is the Republican base has been energized by the issue the last couple years and it’s not going away,” said Chip Saltsman, a Republican strategist.
“This issue has really become a defining issue as you go into the next election cycle,” he added. “Donald Trump uses his bully pulpit very well, and he’s brought a lot of energy and focus on this issue, and they know he’s not going to stop talking about it.”
The Senate also delivered a rebuke to Trump on Wednesday when seven Republicans voted to pass a resolution requiring the president to withdraw U.S. military support from a Saudi-led coalition fighting in Yemen.
Only two of the defectors in that vote are up for reelection next year: Collins and Sen. Steve DainesSteven (Steve) David DainesOvernight Defense: Senate breaks with Trump on Yemen war | Shanahan hit with ethics complaint over Boeing ties | Pentagon rolls out order to implement transgender ban | Dem chair throws cold water on Space Force budget Senate breaks with Trump on Saudi-led war in Yemen Lawmakers introduce bipartisan bill for 'internet of things' security standards MORE (R-Mont.).
The issue of U.S. support for Saudi Arabia, however, has less salience with the GOP base than Trump’s promises to build a border wall.
A recent Politico/Morning Consult poll found that 70 percent of Republicans said they would be more likely to vote for a senator or representative who supports Trump’s national emergency declaration.
“The reason why you had Gardner and Tillis do this is because they knew that the process/principle argument wasn’t going to fly with the Republican base when this is their No. 1 issue. They want execution, and they don’t care how you get it,” said Ford O’Connell, a Republican strategist.
O’Connell said Gardner and Tillis, who have two of the most competitive races next year, need to worry about fending off primary challenges and turning out conservative voters in the election, when Democratic turnout is expected to be high.
“Even though they want to fend off primary challenges, this is also a situation where, in the general election, if they cross Trump on this issue, Trump could win their state and they could still lose,” he added. “In a lot of these races, it’s going to be two-point races, whether it’s Gardner or it’s Tillis.
Sen. Ben SasseBenjamin (Ben) Eric Sasse12 Republican senators defy Trump on emergency declaration Trump faces growing Senate GOP backlash on emergency declaration The Hill's 12:30 Report: O'Rourke jumps into 2020 fray MORE (R-Neb.) is in a slightly different position.
He’s not expected to face a difficult general election, but his repeated criticism of Trump’s conduct and policies has sparked talk of a possible primary challenge — if Sasse decides to run for another term. He said he will announce his decision this summer.
“Obviously Sasse is more concerned about a primary challenge,” O’Connell said, noting that Trump won Nebraska by 20 points in 2016. Sasse describes himself as a “constitutional conservative” and warned in a statement to National Review magazine in February that Trump’s emergency border declaration undermined the Constitution’s separation of powers.
He was seen as a likely vote in favor of the disapproval resolution, especially after several Senate GOP colleagues announced they would support it to preserve the Constitution’s separation of powers.
Sasse announced Thursday that he voted no because he saw it is a “politically motivated resolution” crafted by Democrats to embarrass Trump. He also noted his support for legislation to require Congress to approve future national emergency declarations after 30 days.
Trump emerged as a dominant force in Republican primaries in the 2018 midterm elections. Forty-nine of the 51 Republicans he endorsed in the 2018 primaries won their races, according to ABC News.
Tillis reversed himself on supporting the disapproval resolution after coming under pressure from conservatives in North Carolina.
He boldly voiced support for the resolution in a Feb. 25 Washington Post op-ed in which he warned that Trump’s use of the emergency declaration to secure more funding for border barriers would set a dangerous precedent that future Democratic presidents could exploit.
“Republicans need to realize that this will lead inevitably to regret when a Democrat once again controls the White House,” he wrote.
But Tillis came under withering criticism from conservatives at home, such as Diane Parnell, the chairwoman of the Rockingham County Republican Party, who urged conservative Rep. Mark WalkerBradley (Mark) Mark WalkerGOP lawmaker offers bill letting NCAA athletes profit from their image GOP lawmakers: House leaders already jockeying for leadership contests GOP's Tillis comes under pressure for taking on Trump MORE (R-N.C.) to challenge Tillis in next year’s Senate primary.
“Trump has an approval rate of well over 80 percent among Republicans. That makes GOP Senators fear the President and worry that crossing him will lead to a primary challenger,” said Darrell West, vice president and director of governance studies at the Brookings Institution.
“It is hard to vote against the President on anything he has labeled a high priority. Doing that could lead to a Trump tweet that enrages the conservative base and creates problems for Republican lawmakers,” he added.
The one exception to the trend is Collins, but GOP strategists say she’s in a different category.
“Susan Collins has her own brand,” said Jim McLaughlin, a Republican strategist and pollster. McLaughlin said polling he’s seen of Republican voters in Maine shows she has strong support despite being a well-known moderate.
McLaughlin said Trump’s influence is more potent in Republican primaries where the person he endorses is running against someone without a well-defined brand.
Trump’s scored a coup in last year’s Florida gubernatorial primary when his endorsement helped then-Rep. Ron DeSantisRonald Dion DeSantisFlorida bill repealing ban on smokable medical marijuana headed to governor's desk GOP turns Venezuela into Florida attack line Matt Gaetz makes rare break with Trump: 'Climate change is real' MORE (R-Fla.) overcome a 15-point deficit to defeat Adam Putnam and win the GOP nomination.
“Ron DeSantis — nobody knew who the heck the guy was. He got a couple tweets from the president and an endorsement, and the guy went from being down [big] to winning by a margin of nearly 2-to-1,” he said, citing DeSantis’s 56.5-point-to-36.5-point victory.