Sen. Martha McSally Martha Elizabeth McSallySenate Republicans face tough decision on replacing Ginsburg Democratic senator calls for eliminating filibuster, expanding Supreme Court if GOP fills vacancy What Senate Republicans have said about election-year Supreme Court vacancies MORE (R-Ariz.) did not respond when asked on Thursday about new claims that President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE was involved in a pressure campaign in Ukraine, instead dismissing the CNN reporter who asked the question as a “liberal hack.”

CNN’s Manu Raju asked McSally if the Senate should consider the new material provided by Rudy Giuliani Rudy GiulianiGrand jury adds additional counts against Giuliani associates Lev Parnas and and Igor Fruman Juan Williams: Breaking down the debates Giuliani criticizes NYC leadership: 'They're killing this city' MORE associate Lev Parnas during Trump's impeachment trial.

“Manu, you’re a liberal hack. I’m not talking to you,” the senator said, walking through the halls of the Senate.

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McSally appeared to stand by her remarks, tweeting a video of the interaction.

Democrats have called the new materials provided by Parnas a significant new revelation. His documents and text messages corroborate details over the issues central to the heart of Trump’s impeachment, including an effort to pressure Ukraine to announce an investigation into former Vice President Joe Biden Joe BidenSenate Republicans face tough decision on replacing Ginsburg What Senate Republicans have said about election-year Supreme Court vacancies Biden says Ginsburg successor should be picked by candidate who wins on Nov. 3 MORE, a leading 2020 Democratic presidential candidate.

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But Republicans have been dismissive of the new information. The White House also dismissed the allegations, denying that Trump knows Parnas despite claims to the contrary.

Parnas was indicted for and pleaded not guilty to campaign law violations last year. He is reportedly looking for ways to work with the prosecutors in his case who are seeking more details on Giuliani’s dealings in Ukraine.

McSally’s comments come as the Senate decides whether to call witnesses as part of the impeachment trial set to begin next week.

The Arizona Republican faces a tough reelection in November. The Cook Political Report rates the race a “toss up.”

McSally’s Democratic challenger, Mark Kelly, raised nearly $6.3 million in the fourth quarter of 2019, outpacing McSally’s haul by more than $2 million.

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Kelly is also leading McSally by 4 points among Arizona voters, according to a poll from the left-leaning Public Policy Polling released earlier this month.

McSally has never won a state-wide election to fill the seat. She was appointed last year after it was vacated following the death of Republican Sen. John McCain John Sidney McCainMcSally says current Senate should vote on Trump nominee Say what you will about the presidential candidates, as long as it isn't 'They're too old' The electoral reality that the media ignores MORE. McSally had lost her 2018 Senate bid to Democrat Krysten Sinema Kyrsten SinemaWhy Trump, GOP are running into trouble in Arizona Gun control group to spend at least million in Arizona ahead of November Democratic super PAC targets McSally over coronavirus response MORE, who flipped the seat formerly held by retired Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeRepublican 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 Bush endorsing Biden? Don't hold your breath MORE (R).

Sen. Susan Collins Susan Margaret CollinsSenate Republicans face tough decision on replacing Ginsburg Democratic senator calls for eliminating filibuster, expanding Supreme Court if GOP fills vacancy What Senate Republicans have said about election-year Supreme Court vacancies MORE (R-Maine.), who like McSally is facing a tough reelection campaign, questioned the timing of the new Parnas information on Wednesday.