Republican Sen. Martha McSally expressed concern to GOP activists that some supporters of President Donald Trump may not vote for her, an indication of her struggles to avoid the defection of Republicans whose support she’ll need to keep her seat.

Answering a question from a supporter at a campaign event last week, McSally said there are voters who like Trump but haven’t paid attention to other races on the ballot, according to a recording of her remarks obtained by The Associated Press. They may be convinced by ads positioning her Democratic rival, Mark Kelly, as an independent, she said, and they might not even realize he’s a Democrat.

“So they could keep a generally positive feeling while they keep hammering me,” McSally said of Kelly’s campaign. “Then somebody actually could vote Trump-Kelly.”