The Democratic chairmen of three House panels on Thursday night released text message exchanges between several Trump administration officials regarding the administration's dealings with Ukraine.

House Democrats argued in a letter that the messages underscore the administration's efforts to get Ukraine to pursue an investigation into President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE's political rivals, an issue at the heart of the chamber's impeachment inquiry.

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The letter contains more than a dozen text message exchanges involving Rudy Giuliani Rudy GiulianiThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting CIA found Putin 'probably directing' campaign against Biden: report Democrats fear Russia interference could spoil bid to retake Senate MORE, Trump's personal attorney; Kurt Volker Kurt VolkerGOP senators request details on Hunter Biden's travel for probe Yovanovitch retires from State Department: reports Live coverage: Senators enter second day of questions in impeachment trial MORE, Trump's former envoy to Ukraine; William Taylor, a top official at the U.S. Embassy in Ukraine; Gordon Sondland, the U.S. ambassador to the European Union; and Andriy Yermak, a Ukrainian official.

“These text messages reflect serious concerns raised by a State Department official about the detrimental effects of withholding critical military assistance from Ukraine, and the importance of setting up a meeting between President Trump and the Ukrainian President without further delay,” the chairmen wrote.

Read the full release here: