Top Cruz aide Amanda Carpenter departing
© Greg Nash

Amanda Carpenter, a top aide to Sen. Ted CruzRafael (Ted) Edward CruzLincoln Project offers list of GOP senators who 'protect' Trump in new ad How conservative conspiracy theories are deepening America's political divide Gianforte halts in-person campaigning after wife, running mate attend event with Guilfoyle MORE (R-Texas), is leaving his office to return to conservative commentary under her own name.

Carpenter announced the move Tuesday in a message to colleagues that was first reported by Roll Call. She will leave Cruz's office on July 5.

“Looking back, I’m especially grateful for the opportunity to create #MakeDCListen, help with Sen. Cruz’s Gridiron speech, and contribute to his flawless presidential launch — as well as countless other memorable tweets, jokes, lines, talkers, statements, op-eds, and other items. We’ve been in high gear since Day 1 and I’m very proud of what we’ve done together,” Carpenter wrote, according to Roll Call

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“Thank you for everything, from the bottom of my heart. When I came to Capitol Hill I never imagined just how good the coming years would be. For those of you who I have worked with since the DeMint office, this parting will be particularly bittersweet,” she added. “Taking on the DC establishment is no easy task and it’s been a joy every step of the way.”

Carpenter joined Cruz's office as a speechwriter and senior communications adviser in early 2013, before being promoted to communications director in the fall. 

She previously served as a speechwriter and senior communications adviser to former Sen. Jim DeMint (R-S.C.), who departed the Senate to head up the conservative Heritage Foundation. 

Carpenter is one of the most outspoken communications aides in Washington and has more than 56,000 Twitter followers, dwarfing the number held by most in similar positions. 

The departure is a major blow for Cruz, who announced his presidential bid on March 23 and is working to make himself stand out in a crowded field of Republicans presidential contenders.