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Sanford: 'I don't know' if I would vote for Trump in 2020

Sanford: 'I don't know' if I would vote for Trump in 2020
© Greg Nash

Former South Carolina Rep. Mark SanfordMark SanfordCheney set to be face of anti-Trump GOP GOP braces for wild week with momentous vote Lobbying world MORE, a Republican challenging President TrumpDonald TrumpKinzinger, Gaetz get in back-and-forth on Twitter over Cheney vote READ: Liz Cheney's speech on the House floor Cheney in defiant floor speech: Trump on 'crusade to undermine our democracy' MORE in a longshot primary campaign, said on Sunday that he isn't sure if he would still consider voting for Trump in 2020, despite allegations that the president solicited foreign interference to benefit him politically. 

Host Jake TapperJacob (Jake) Paul TapperClyburn says he's willing to compromise on qualified immunity in policing bill GOP divided over expected Cheney ouster GOP governor says Republican Party has to allow for differences MORE asked Sanford on CNN's "State of the Union" if he would vote for Trump over Vice President Joe BidenJoe BidenKinzinger, Gaetz get in back-and-forth on Twitter over Cheney vote Cheney in defiant floor speech: Trump on 'crusade to undermine our democracy' US officials testify on domestic terrorism in wake of Capitol attack MORE if they end up being the candidates in 2020. 

"I don’t know," Sanford responded. "What I've said is I'm an issue guy." 

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Sanford said he's going to base his decision on "who is going to be closest to me" with a focus on debt and spending. 

Former Illinois Rep. Joe WalshJoe WalshGOP lawmakers mourn death of Rush Limbaugh Sacha Baron Cohen pens op-ed on the dangers of conspiracy theories Sunday shows preview: Protests continue over shooting of Blake; coronavirus legislation talks remain at impasse MORE, a fellow 2020 GOP challenger, said there is "no way in hell" he would vote for Trump.

"I'm running against President Trump because he's unfit," Walsh said. 

"The debate is about Trump, period," he added. 

The Republicans were also split on where they stand on impeachment, with Walsh saying the president deserves to be impeached based on his public actions alone and Sanford saying Congress needs to follow a formal investigation process. 

Trump is facing an impeachment inquiry after a whistleblower came forward with allegations that Trump asked Ukraine to investigate Biden and his son. 

A partial memo of a call between Trump and Ukrainian President Volodymyr Zelensky shows Trump asking the foreign leader to investigate the Bidens. 

Trump publicly called on China and Ukraine to investigate the Bidens when speaking to reporters last week.