During the presentation, National Republican Senatorial Committee executive director Kevin McLaughlin warned that if hardline conservative Kris Kobach wins next Tuesday’s Kansas Senate primary, it could doom the GOP Senate majority — and perhaps even hurt President Donald Trump in a state that hasn’t voted Democratic since 1964.

“The Senate majority runs through Kansas,” McLaughlin warned, according to people familiar with the call.

The new warning came after a flurry of Democratic meddling has scrambled the closing weeks of a primary race that had otherwise gotten back on track. Senate Republicans have opposed Kobach for a year, fretting that he can’t win a Senate contest after losing the 2018 gubernatorial race, and have warned about him consistently in public and in private…

Republican officials, including Sen. Todd Young (R-Ind.), the NRSC chairman, have spoken with the president as recently as last week about making an endorsement in the race, believing that he could single-handedly alter the current trajectory, according to multiple people familiar with the conversations. Internal Republican polling has shown a Trump endorsement would shift potential Kobach supporters towards the president’s pick, according to a Republican familiar with the data.