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 on Sunday threw his support behind Rep. Lou Barletta Louis (Lou) James BarlettaBottom Line Ex-GOP congressman to lead group to protect Italian products from tariffs Head of Pennsylvania GOP resigns over alleged explicit texts MORE (R-Pa.), who is seen as the leading Republican candidate seeking to unseat Sen. Bob Casey Robert (Bob) Patrick CaseySecond GOP senator to quarantine after exposure to coronavirus GAO report finds brokers offered false info on coverage for pre-existing conditions Catholic group launches .7M campaign against Biden targeting swing-state voters MORE Jr. (D) in the midterm elections.

“Rep. Lou Barletta, a Great Republican from Pennsylvania who was one of my very earliest supporters, will make a FANTASTIC Senator,” Trump tweeted. “He is strong & smart, loves Pennsylvania & loves our Country! Voted for Tax Cuts, unlike Bob Casey, who listened to Tax Hikers Pelosi and Schumer!”

Rep. Lou Barletta, a Great Republican from Pennsylvania who was one of my very earliest supporters, will make a FANTASTIC Senator. He is strong & smart, loves Pennsylvania & loves our Country! Voted for Tax Cuts, unlike Bob Casey, who listened to Tax Hikers Pelosi and Schumer! — Donald J. Trump (@realDonaldTrump) February 11, 2018

Trump had already given Barletta a de facto endorsement last year when he said during a rally that the candidate was a "great guy" who will "win big."

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The president has lately taken an interest in elections in Pennsylvania, a state that proved vital to Trump’s victory in 2016.

Last month, the president visited the state to signal support for Rick Saccone, the Republican candidate in a special election to replace Rep. Tim Murphy Tim MurphyBiden receives endorsements from three swing-district Democrats A federal abortion law might be needed Female Dems see double standard in Klobuchar accusations MORE (R), who announced his resignation last month after reports that he had urged a woman with whom he had been having an affair to get an abortion.

Barletta was an early supporter of Trump’s presidential campaign. After Trump expressed his support, Barletta tweeted on Sunday afternoon: “We are revitilizing the American dream day after day. America will grow America will prosper America will be greater than ever before. #MAGA.”

We are revitilizing the American dream day after day.



America will grow



America will prosper



America will be greater than ever before. #MAGA — Rep. Lou Barletta (@RepLouBarletta) February 11, 2018

Barletta has drawn fire recently over a CNN report that when he was mayor of Hazleton, Pa., he did an interview in 2006 with American Free Press, which is known for promoting anti-Semitic views, including the idea that the Holocaust wasn’t real.

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The next year he also headlined a rally featuring a band that promoted Holocaust and 9/11 conspiracies.

According to Barletta’s deputy campaign manager, Barletta was “not aware of these individuals’ background,” and has always condemned “hate, bigotry and racial supremacy in all its forms.”

The Pennsylvania primary elections for the Senate will be held on May 15.