The initial deployment is likely to hit states that have swung between Republicans and Democrats in recent cycles, according to the official, such as Ohio and Florida.

Additionally, with the billionaire businessman looking increasingly likely to be the GOP nominee, the Clinton campaign sees an opportunity to expand beyond this map, said the official, who wasn’t authorized to discuss internal plans and wouldn’t specify which new battleground states the campaign might initially target.

The redeployment comes as the campaign is ratcheting back advertising in upcoming Democratic primary states, including Oregon and California. It also follows a decision by her challenger, Vermont Sen. Bernie Sanders, to lay off hundreds of staff after losing four of five critical Eastern primary states to Clinton on Tuesday.