Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden Maybe they just don't like cowboys: The president is successful, some just don't like his style MORE’s (R-Ariz.) son is reportedly seeking a new civil trial against ex-sheriff Joe Arpaio, who is running to replace Flake in the Senate.

Austin Flake and his ex-wife lost a lawsuit late last year that alleged Arpaio pursued felony animal cruelty charges against them in an effort to hurt the senator politically. The case was dismissed in December.

Austin Flake’s lawyer told The Associated Press that he will seek another trial because authorities did not turn over evidence that he believes could have swayed the jury in Flake’s favor.

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In June 2014, Austin Flake and his then-wife were charged in a case relating to the deaths of 21 dogs at a kennel when the air conditioning in the room they were staying in stopped working. Austin Flake and his wife were watching the dogs at while his in-laws, who operated the kennel, were out of town.

Since the case was dismissed, Arpaio has announced his candidacy to replace Jeff Flake in the Senate. Flake, who has been a vocal critic of President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE, is not running for reelection.

Arpaio has been an outspoken supporter of Trump since he launched his campaign in 2015. Apraio faces a GOP primary this summer against Rep. Martha McSally Martha Elizabeth McSallyTumultuous court battle upends fight for Senate Grassley, Ernst pledge to 'evaluate' Trump's Supreme Court nominee The Hill's Campaign Report: Biden goes on offense MORE (R-Ariz.) and Kelli Ward.

Trump pardoned Arpaio last August after the sheriff had been found guilty of contempt of court after a Justice Department investigation found he racially profiled Latinos.