President-elect Donald Trump’s pick to lead the Defense Department, Pete Hegseth, is in danger as Senate Republicans grow increasingly concerned over reports about his alleged drinking and treatment of women.

As many as six Senate Republicans, perhaps more, are currently not comfortable supporting Hegseth's bid to lead the Pentagon, three Republican sources with direct knowledge of his nomination process told NBC News. Given Republicans' slim Senate majority in the next Congress, Hegseth can afford to only lose three GOP votes, assuming all Democrats vote against him.