Sen. John CornynJohn CornynHillicon Valley: Biden calls for revoking tech legal shield | DHS chief 'fully expects' Russia to try to interfere in 2020 | Smaller companies testify against Big Tech 'monopoly power' Bipartisan group of senators introduces legislation to boost state cybersecurity leadership Koch network could target almost 200 races in 2020, official says 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 CruzSenate GOP mulls speeding up Trump impeachment trial The Hill's Morning Report — President Trump on trial GOP threatens to weaponize impeachment witnesses amid standoff 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."

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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 McConnellDems plan marathon prep for Senate trial, wary of Trump trying to 'game' the process Senate GOP mulls speeding up Trump impeachment trial Republicans will pay on Election Day for politicizing Trump's impeachment MORE (R) to bring on Jesse Benton, a top strategist for Sen. Rand PaulRandal (Rand) Howard PaulGOP threatens to weaponize impeachment witnesses amid standoff Paul predicts no Republicans will vote to convict Trump Graham on impeachment trial: 'End this crap as quickly as possible' 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.