(CNN) Sometimes politicians can't help themselves. They get careless. They say stuff they shouldn't say. They tell the truth that they have been trying to disguise.

-- that former Vice President Joe Biden had acted inappropriately in 2016 when he called for the resignation of the top prosecutor in Ukraine, So it went for Iowa Sen. Joni Ernst on Monday night . Following an afternoon at the Senate impeachment trial in which President Donald Trump's legal team made the case -- without any established factual basis -- that former Vice President Joe Biden had acted inappropriately in 2016 when he called for the resignation of the top prosecutor in Ukraine, Ernst told reporters this

"Iowa caucuses are this next Monday evening. And I'm really interested to see how this discussion today informs and influences the Iowa caucus voters, those Democratic caucus goers. Will they be supporting VP Biden at this point?"

ERNST: "IA caucuses are this next Monday evening. And I'm really interested to see how this discussion today informs and influences the Iowa caucus voters, those Demcaucus goers. Will they be supporting VP Biden at this point?"



H/T @JaxAlemany pic.twitter.com/tYYkSPuIDY — Alan He (@alanhe) January 28, 2020

Whoops!

Remember that Republicans -- including Ernst -- have been arguing for months and months that Trump's effort to get Ukrainian President Volodymyr Zelensky to look into the activities of Biden and his son, Hunter, in Ukraine had nothing to do with the fact that the former vice president was a) running for the 2020 Democratic nomination and b) was a front-running candidate to be the nominee. Trump's interest was solely in rooting out corruption! This wasn't about Biden at all!

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