Sen. Dianne Feinstein (D-Calif.) is under pressure to take a hard line against President Trump‘s pick to lead the CIA.

The 84-year-old senator has emerged as a key vote to watch during the looming fight over CIA Deputy Director Gina Haspel’s nomination.

Feinstein — who is up for reelection in 2018 and facing a primary challenge from the left — took heat this week when she said that she was undecided on Haspel and described her as “good deputy director” at the spy agency.