Mitch McConnell said Thursday that his party’s chance of maintaining control of the Senate in 2016 are “very dicey” and he could not be sure of his status as the majority leader next year.

McConnell did not specifically mention Republican nominee Donald Trump’s drag on down-ballot races at the meeting with a Louisville-area civic group in his home state, according to The Associated Press, but he chided Trump’s campaign tactics and said he hopes Trump “settles down and follows the script.”

Several Republican candidates — including onetime favorites like Florida Sen. Marco Rubio — have floundered in recent weeks as Trump struggles in the polls and exasperates GOP leaders with explosive comments. Just this week, for instance, Trump declared Democratic nominee Hillary Clinton and President Barack Obama the founder and co-founder of the ISIS terrorist organization and invited Second Amendment advocates to take action against Clinton.

GOP party leaders have registered increasing alarm. McConnell expressed concern about Trump’s recent missteps during the appearance but told the group that he still stands behind his endorsement, Louisville public radio station WFPL reported.

He nevertheless acknowledged that the party is at a crossroads.