More signs are pointing toward a presidential run for Sen. Ted Cruz.
Cruz's chief of staff, Chip Roy
, a former aide to Texas Gov. Rick Perry, is exiting that job to take on a bigger role in Cruz's political operations and serve as a senior adviser, the senator announced Wednesday.
"Chip Roy has played a vital role in the battles we've waged, the mountains we've climbed, and our remarkable successes," said Cruz, a Texas Republican.
"So, I'm very pleased that he will be applying his exceptional talents and passion toward fighting for conservative principles through our campaign arm."
notes that Roy's focus on the campaign side follows moves by other GOP senators thought to be mulling a bid for the White House in 2016 — moving their closest aides into political operations that could be used to launch any future presidential campaigns.
GOP Sens. Rand Paul of Kentucky and Marco Rubio of Florida also have shifted their chiefs from congressional offices to political operations, Politico notes.
Cruz has also made other additions
in recent weeks to bolster his political operation and campaign trail presence.
Roy's hiring for Cruz's congressional operation two years ago was praised by conservatives, Politico notes, but caused some grief for Republican Senate colleagues who were criticized by Roy for opposing Cruz's tactics that contributed to a government shutdown.
, fired from the conservative Republican Study Committee last year, will take over chief-of-staff duties from Roy. He previously served as deputy chief of staff for Cruz.
"Paul Teller was a terrific addition eight months ago, and since then he has proven his reputation to be true — he's an ardent activist for the conservative movement and a strong motivator of people to take bold actions for liberty. He will serve Texas and the nation well as our office's chief of staff," Cruz said.
James Christoferson, a former top aide to former Sen. Kay Bailey Hutchison, also a Texas Republican, will serve as a deputy chief of staff for Cruz.
Cruz had supporters excited with a speech last Saturday in Dallas at the meeting of Americans for Prosperity, the political arm of the billionaire Koch brothers.
"We're going to win in 2014, and 2016 is going to be even better," he said.
The Associated Press contributed to this report.
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