08/14/2014 09:58 pm ET Updated Dec 06, 2017

Joe Miller Robocall In Alaska Republican Senate Primary Features Sheriff Joe Arpaio

Spencer Platt via Getty Images

The man known as "America's Toughest Sheriff" has weighed in on Alaska's Senate race.

A new robocall obtained by The Huffington Post features Joe Arpaio -- the Maricopa County, Arizona, sheriff who has drawn national attention for his harsh rhetoric against immigration -- touting his endorsement of Alaska GOP candidate Joe Miller.

"Joe Miller is the only candidate for Senate with a plan to secure our borders to stop the illegal invasion," Arpaio says. "Joe will end taxpayer benefits to illegals and foreign aid to nations encouraging illegal immigration -- and finish the border fence."

Miller, a lawyer, is a tea party favorite seeking the Republican nomination to challenge Sen. Mark Begich (D-Alaska). He has attacked Begich on immigration policy, spotlighting the flood of unaccompanied child migrants along the southern border.

"There is no doubt that he is complicit with the president in encouraging and empowering this illegal invasion, both from a policy perspective by voting for amnesty, and by virtue of his refusal to hold Barack Obama accountable for dereliction of duty and usurpation of Congressional authority," Miller said in July.

Miller's campaign sent out a mailer that used racially charged imagery and suggested that Begich favors allowing undocumented immigrants to vote.

Miller has trailed in the primary all summer. HuffPost Pollster, which aggregates polling data from multiple sources, shows him third of four Republican candidates.

Miller has previously run for Senate in Alaska. In 2010, he challenged Sen. Lisa Murkowski (R-Alaska) and won, only to have Murkowski emerge victorious as a write-in candidate.



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