DES MOINES, Iowa — President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE is casting a huge shadow over the Democratic caucuses in Iowa.

He may not be able to fully eclipse one of the biggest moments on the opposition party’s calendar, but he is at least consuming much of the oxygen around it.

The breadth of Trump’s efforts is startling, even by the standards of a president who is notoriously loath to cede the spotlight.

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A Trump interview, conducted by Sean Hannity Sean Patrick HannityDershowitz suing CNN for 0 million in defamation suit If Trump doesn't know why he should be president again, how can voters? Trump says he read 'boring' Woodward book 'very quickly' MORE of Fox News, aired in the hours before the Super Bowl on Sunday.

The president, whose instinct for making news often outstrips his veracity, claimed without evidence that former New York City Mayor Michael Bloomberg Michael BloombergThe Hill's 12:30 Report - Presented by Facebook - Latest with the COVID-19 relief bill negotiations The Memo: 2020 is all about winning Florida The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump, Biden renew push for Latino support MORE wanted to be able to stand on a box to make himself look taller at forthcoming Democratic debates.

Trump also held a large rally in Des Moines on Thursday night, just four days before the caucuses.

The president drew 7,000 people to a Drake University sports arena, where he spoke for almost 90 minutes. It was more than double the size of the crowd that went to see Sen. Bernie Sanders Bernie SandersSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Schumer, Sanders call for Senate panel to address election security MORE (I-Vt.) in Cedar Rapids, Iowa, on Saturday night — an event the Sanders campaign claimed was the largest held by any Democrat in the Hawkeye State during this cycle.

The Trump campaign is also deploying high-profile surrogates across Iowa on Monday.

Controversially, the effort includes several Cabinet members such as Education Secretary Betsy DeVos Elizabeth (Betsy) Dee DeVosOVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' Senate Democrats demand White House fire controversial head of public lands agency Poll: Majority of teachers worried that school districts will reopen too quickly MORE, Housing and Urban Development Secretary Ben Carson Benjamin (Ben) Solomon CarsonBiden cannot keep letting Trump set the agenda The Hill's 12:30 Report: Trump heads to New Hampshire after renomination speech Five takeaways on GOP's norm-breaking convention MORE, Commerce Secretary Wilbur Ross Wilbur Louis RossThe Hill's Morning Report - Sponsored by National Industries for the Blind - Trump seeks to flip 'Rage' narrative; Dems block COVID-19 bill Judge orders Trump administration stop 'winding down' census collection, processing efforts Animal rights group sues US government to prevent aquarium from acquiring 5 beluga whales MORE, and Interior Secretary David Bernhardt.

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Key congressional Trump supporters including Reps. Jim Jordan James (Jim) Daniel JordanRepublicans call for Judiciary hearing into unrest in cities run by Democrats Trump, GOP seek to rebut Democratic narrative on night one Jim Jordan praises Trump for calling his family after nephew's death MORE (R-Ohio) and Mark Meadows Mark Randall MeadowsAmerican Airlines, unions call for six-month extension of government aid McEnany tells CNN reporter to come work at the White House for details on health care plan Trump undercuts GOP, calls for bigger COVID-19 relief package MORE (R-N.C.) will also be present, as will two of Trump’s adult children, Don Jr. and Eric, and his campaign manager, Brad Parscale Bradley (Brad) James ParscaleMORE.

The ostensible purpose is to ensure a strong showing in the Republican caucuses. But no one really takes this pretext at face value, given that Trump faces no serious opposition in those contests. The effort seems much more designed to avoid letting Democrats command public attention without rebuttal.

Beyond the efforts that Trump and his campaign are proactively making, he is affecting the caucuses in other ways too.

The timing of his trial in the Senate has had a big impact on the campaigning schedules of four candidates.

Sens. Bernie Sanders (I-Vt.), Elizabeth Warren Elizabeth WarrenNo new taxes for the ultra rich — fix bad tax policy instead Democrats back away from quick reversal of Trump tax cuts It's time for newspapers to stop endorsing presidential candidates MORE (D-Mass.), Amy Klobuchar Amy KlobucharEPA delivers win for ethanol industry angered by waivers to refiners It's time for newspapers to stop endorsing presidential candidates Biden marks anniversary of the Violence Against Women Act, knocks Trump and McConnell MORE (D-Minn.) and Michael Bennet Michael Farrand BennetOVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' Senate Democrats demand White House fire controversial head of public lands agency Next crisis, keep people working and give them raises MORE (D-Colo.) have all had their efforts curtailed by the need to be present in the Senate.

All four are trying to make up for lost time — though admittedly this seems to have had little adverse effect on Sanders, who is the late favorite to win the caucuses.

Other candidates are grappling with the competing claims on their time and attention, however.

Warren, for example, was too late to make an event she had been scheduled to attend with Rep. Ayanna Pressley Ayanna PressleySan Francisco considers changing local voting age to 16 Hillicon Valley: Election officials prepare for new Russian interference battle | 'Markeyverse' of online fans helps take down a Kennedy | GOP senators unveil bill to update tech liability protections 'Markeyverse' of online fans helps take down a Kennedy MORE (D-Mass.) in downtown Des Moines on Friday evening. The Massachusetts senator did eventually arrive, direct from Washington, and briefly addressed waiting supporters in a packed bar across the street from the original venue.

The impeachment proceedings could resonate in other ways, too. Former Vice President Joe Biden Joe BidenThe Memo: Warning signs flash for Trump on debates Senate Republicans signal openness to working with Biden National postal mail handlers union endorses Biden MORE has repeatedly claimed that he will be able to work with Republicans if elected. At a Friday event at a Quality Inn in the eastern Iowa town of Fort Madison, Biden complained about rivals who condemned him as “naive” for this view.

But the Biden case of comity and cooperation could be harder to make after Republican senators marched in lockstep with Trump over impeachment, not just in terms of their likely vote at the end of the process but in their refusal to countenance calling witnesses.

Then there is the biggest question of all facing Democrats at the caucuses: Who is best to beat Trump?

Left-leaning supporters of Sanders and Warren and the more centrist backers of Biden, Klobuchar and former South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBogeymen of the far left deserve a place in any Biden administration Overnight Defense: Woodward book causes new firestorm | Book says Trump lashed out at generals, told Woodward about secret weapons system | US withdrawing thousands of troops from Iraq A socially and environmentally just way to fight climate change MORE are united in their loathing of the president and their desire to beat him.

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Eighty-one-year-old Jeraine Hofer, a Biden supporter, described Trump as “one of the worst presidents of my lifetime.” Beating him was imperative, Hofer added, because “we have a chance of losing our democracy right here.”

The question, of course, is how best to win.

Warren, speaking in Cedar Rapids on Saturday, cast Trump as a symptom of larger ills in American society — and presented herself as the candidate to take on those deeper issues.

“A country that elects a man like Donald Trump has serious problems,” Warren told the crowd.

Biden supporters, by contrast, typically depict Trump as a one-man historical aberration and their preferred candidate as the person to restore normalcy.

Former Iowa Gov. Tom Vilsack Thomas James VilsackUSDA: Farm-to-school programs help schools serve healthier meals OVERNIGHT MONEY: House poised to pass debt-ceiling bill MORE (D), who is backing Biden, told The Hill on Friday, “People say, ‘Well, he needs more energy.’ No, actually he needs to provide a contrast to President Trump. President Trump has plenty of energy but people are saying, ‘Too much, too much.’ We want someone who is a statesman, who is calming.”

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But one thing is for sure. For now, Trump is not going anywhere. And he is already framing the election on his terms, in Iowa and across the nation.

“This election is a choice between American freedom and democratic socialism,” he told his crowd in Des Moines on Thursday.

Voters need to stick with him, he told them, rather than migrating to “the radical socialist Democrats just down the street.”

The Memo is a reported column by Niall Stanage, primarily focused on Donald Trump’s presidency.