Republicans and White House at Odds Over Kansas Senate Race

WASHINGTON — As the Kansas Senate primary barrels to a close, tensions are rising between Senate Republicans and the White House over the potential nomination of Kris Kobach, who party officials fear would jeopardize the seat and further imperil their Senate majority.

Senator Mitch McConnell is worried that Mr. Kobach, the controversial former Kansas secretary of state who lost the 2018 governor’s race, may win the nomination in Tuesday’s primary, only to lose the seat in November — and he is frustrated that President Trump is not intervening in the race, according to multiple G.O.P. officials.

Mr. McConnell and other Senate Republican leaders have made urgent pleas to the president to block Mr. Kobach by endorsing one of his opponents, Representative Roger Marshall. But Mr. Trump has so far declined to do so, and his aides said they had no plans to change course. Compounding the frustration of Capitol Hill Republicans, White House aides have refused to tell Mr. Kobach, a longtime booster of Mr. Trump, to stop using the president’s imagery in his campaign materials.

With a number of incumbent Senate Republicans trailing in polls, and being out-raised by their Democratic rivals, they have little margin for error as they seek to protect their 53-47 majority. And because of Mr. Trump’s broad unpopularity, and a health crisis that has devastated the economy, even a deeply conservative state like Kansas, which has not sent a Democrat to the Senate since the 1930s, is no sure thing for Senate Republicans this year.