Sen. John CornynJohn CornynAfter Texas shooting, lawmakers question whether military has systemic reporting problem Overnight Defense: Lawmakers question military's lapse after Texas shooting | Trump asks North Korea to 'make a deal' | Senate panel approves Army pick Overnight Regulation: House passes bill to overturn joint-employer rule | Trump officials to allow work requirements for Medicaid | Lawmakers 'alarmed' by EPA's science board changes MORE (R-Texas) has hired former FreedomWorks grassroots director and Texas native Brendan Steinhauser to run his reelection campaign, a sign he's focused on shoring up his right flank to avoid a potential primary challenge.

Steinhauser, while at FreedomWorks, pushed hard to help now-Sen. Ted CruzRafael (Ted) Edward CruzOvernight Finance: GOP criticism of tax bill grows, but few no votes | Highlights from day two of markup | House votes to overturn joint-employer rule | Senate panel approves North Korean banking sanctions GOP criticism of tax bill grows, but few ready to vote against it Anti-gay marriage county clerk Kim Davis to seek reelection in Kentucky MORE (R-Texas) pull off a primary upset against Texas Lt. Gov. David Dewhurst (R) in 2012, and has close ties with the state's Tea Party activists.

"The midterm elections in 2014 will be vital to the future of our country and our state, especially given the interest that liberal Democrats have shown in trying to turn Texas blue," Cornyn said. "I look forward to working with my team to ensure that Texas remains red. Brendan has been working hard for conservative policies and candidates in more than 40 states, and I am excited that he is joining our team in Texas."

Steinhauser called Cornyn a "conservative leader that I admire and respect."

"Senator Cornyn has been fighting for Texas values for a long time and I look forward to working hard to ensure that he continues to lead the fight for these values in the U.S. Senate," he said.

That Cruz-Dewhurst primary put Cornyn in a somewhat awkward spot at the time. He was heading the National Republican Senatorial Committee and actively worked to avoid any appearance of taking sides in the primary, even refusing to say who he voted for in the race. 

FreedomWorks and other conservative groups caused Cornyn some other headaches in 2012 by pushing hardline conservatives in primaries in contested Senate races.

Cornyn appears to be safe in both the primary and general election at this point. But the move further shores him up on the right and gives him someone to reach out to Tea Party activists who haven't traditionally been Cornyn's biggest fans.

The hire mirrors the move by Senate Minority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellMcConnell expects Paul to return to Senate next week Former Hill staff calls for mandatory harassment training Gaming the odds of any GOP tax bill getting signed into law MORE (R) to bring on Jesse Benton, a top strategist for Sen. Rand PaulRandal (Rand) Howard PaulGOP senator asks to be taken off Moore fundraising appeals Red state lawmakers find blue state piggy bank Prosecutors tell Paul to expect federal charges against attacker: report MORE (R-Ky.), to run his campaign. 

Both McConnell and Cornyn have faced criticism on the right and have sought to blunt that by making sure there is little daylight between themselves and their states' junior senators, as well as by bringing on some of those senators' close allies to run their races.