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Trump speaks during a campaign rally at Drake University in Des Moines, Jan. 30. Photo: Saul Loeb/AFP via Getty Images

The star guest spotted at a Sheraton in Des Moines in recent days was Elizabeth Warren's golden retriever, Bailey. But in a conference room off the same hotel lobby, Trump campaign operatives have been quietly orchestrating a massive operation for tomorrow's Republican caucuses.

Why it matters: The Trump campaign is using Iowa as a testing ground for the rest of the campaign trail.

  • It's testing its field program, bandwidth of staff and volunteers on the ground, and the efficiency of its surrogates. Trump rallied in Iowa himself last week, and roughly 80 members of Congress, Cabinet secretaries and administration officials are coming tomorrow.
  • The campaign said it recruited 2,400 volunteers for caucus efforts alone, holding 93 training sessions and making 125,000 phone calls.
  • “The caucus is a test of turnout [of volunteers, and staff],” Stephanie Alexander, regional political director for the Trump campaign, tells Axios. “This is a really, really good way for us to see how far we can get and how far our reach is with the staff that we have on the ground and the volunteers that have already committed.”

Surrogates: Top surrogates per the Trump campaign: Lara Trump, Donald Trump Jr., Eric Trump, Kimberly Guilfoyle and Brad Parscale.

  • They’ll run through Trump’s greatest hits throughout different parts of Iowa, particularly the passage of the USMCA and signing phase one of the U.S.-China trade deal, playing straight to the Iowa farmers.

Between the lines: Iowa has a lot of unaffiliated voters, and the Trump campaign plans to focus heavily on voter registration, including converting independent and Democratic voters supportive of POTUS to register as Republicans.

  • It’s also the first opportunity since 2016 for Iowans to affirm their support for Trump.
  • It's also an important state for Republicans to take seriously, given GOP Senator Joni Ernst is up for re-election and the GOP is eyeing two House seats they lost in 2018.

Go deeper: Biden surrogates test electability argument ahead of Iowa clash with Sanders

Go deeper

Updated 1 hour ago - World

Australia joins U.S. in diplomatic boycott of Beijing Winter Olympics

Australian Prime Minister Scott Morrison. Photo: Darrian Traynor/Getty Images

Australia is joining the U.S. in a diplomatic boycott of the 2022 Beijing Winter Olympic Games in protest of human rights abuses committed by China's government, Prime Minister Scott Morrison confirmed Wednesday.

Driving the news: After the Biden administration's announcement that U.S. officials won't attend the Games due to the ongoing genocide of Uighurs and other Muslim minorities in the Xinjiang region of China, Morrison said at a Sydney briefing that Australia would follow suit as "it's the right thing to do."

Progressives to file resolution to strip Boebert's committee seats

Rep. Lauren Boebert walking through the Senate side of the U.S. Capitol earlier this month. Photo: Drew Angerer/Getty Images

House progressives are planning to introduce a resolution on Wednesday to strip Rep. Lauren Boebert (R-Colo.) of her committee assignments, according to a Democratic aide familiar with the matter.

Why it matters: The move, which was first reported by the Washington Post, comes as progressives — anxious to see the right-wing firebrand face retribution for her recent comments — have grown frustrated by Democratic leadership's inaction on the issue.

Roger Stone won't cooperate with Jan. 6 panel

Longtime Trump confidante Roger Stone speaking in front of the Supreme Court on Jan. 5 in Washington, D.C. Photo: Tasos Katopodis/Getty Images

Longtime Trump confidante Roger Stone won't cooperate with the House select committee investigating the Jan. 6 Capitol riot and will invoke the Fifth Amendment right not to testify, his attorney said Tuesday evening.

Why it matters: The announcement, first reported by ABC News, came hours after former White House chief of staff Mark Meadows said he wouldn't cooperate with the probe.