Last Tuesday could well prove to be one of the most consequential days of the Trump presidency. It was a day when the sitting president of the United States was implicated in a criminal conspiracy, and the first time since the Nixon years that the head of a presidential campaign has been convicted of federal crimes.

Regardless of whatever else special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE discovers in his probe, the events of August 21 firmly put to rest the idea that the Russia investigation is “just a witch hunt,” as President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE has repeatedly claimed. Crimes were shown to have been committed by some of those closest to him, and the perpetrators now have been successfully prosecuted or willingly pleaded guilty, as well.

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From a political perspective, the convictions of former Trump campaign chairman Paul Manafort Paul John ManafortOur Constitution is under attack by Attorney General William Barr Bannon trial date set in alleged border wall scam Conspicuous by their absence from the Republican Convention MORE and the guilty pleas of former Trump attorney Michael Cohen are a clear boost for Democrats and a huge liability for Republicans heading into the midterm elections.

This administration already has been plagued by numerous scandalous headlines that call into question its ethical character. From the private plane trips by Interior Secretary Ryan Zinke Ryan Keith ZinkeTrump extends Florida offshore drilling pause, expands it to Georgia, South Carolina Conspicuous by their absence from the Republican Convention Trump flails as audience dwindles and ratings plummet MORE, Treasury Secretary Steven Mnuchin Steven Terner MnuchinOn The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Vulnerable Democrats tell Pelosi COVID-19 compromise 'essential' Pelosi asks panels to draft new COVID-19 relief measure MORE, and resigned Health and Human Services Secretary Tom Price Thomas (Tom) Edmunds PriceConspicuous by their absence from the Republican Convention Coronavirus Report: The Hill's Steve Clemons interviews Chris Christie Trump flails as audience dwindles and ratings plummet MORE, to Commerce Secretary Wilbur Ross Wilbur Louis RossTrump admin asks Supreme Court to fast-track excluding people in U.S. illegally from census Trump 'very happy' to allow TikTok to operate in US if security concerns resolved TikTok, WeChat to be banned Sunday from US app stores MORE continuing to hold stakes in foreign companies with business before the U.S. government despite claims he made to the Senate that he had divested, the Trump administration has an image problem, and the fact that his campaign chairman and personal lawyer are now convicted felons will only further hurt Republican chances at the ballot box.

But I would be remiss if I did not say that it would be a grave mistake for Democrats to spend the rest of the election focusing solely on the financial crimes of Trump associates. As salacious as the details are, and it would be reasonable to anticipate more information in the coming weeks and months, the majority of moderate voters that Democrats need to win back the House this fall will not be moved by messaging that focuses on the ethical and legal trespasses of Trump world. If they were, they would not have voted for him in 2016 when the moral character of Trump, and those with whom he surrounds himself, was already readily apparent.

The swing voters in the districts that Democrats need to win are concerned with issues that impact their everyday lives and their children, such as education, health care and the economy. If Democrats are to succeed in flipping the House in November, they must offer a compelling and distinct alternative to the policies of Republicans in Congress that appeals to a broad swath of American voters, not just the far left.

While some Democratic candidates for Congress, such as Conor Lamb in southwestern Pennsylvania, have demonstrated that they understand the importance of focusing on kitchen table issues, I worry that far too many other candidates have fallen into the trap of either running solely against Trump or running on pie in the sky policy proposals, such as “Medicare for all” that not only lack broad appeal but are completely infeasible and would set back our country.

Many will disagree with my message here, arguing that I am not taking the criminality of this administration seriously enough. But I say this to them: The protesting, agitating and “resisting” will not mean a thing if Democrats fail to take back the House in November. While Democrats should feel vindicated by the events of the past week, they certainly should not become complacent.

Douglas E. Schoen (@DouglasESchoen) served as a pollster for President Clinton. A longtime political consultant, he is also a Fox News contributor and the author of 11 books, including “Putin’s Master Plan: To Destroy Europe, Divide NATO, and Restore Russian Power and Global Influence.”