His only contribution as voters turned out across the United States for the midterm vote was to retweet polling locations and mild endorsements of a few key candidates.
Despite a seemingly energized grassroots electorate, the Democratic Party has been viewed as a long shot to take back control of the Senate where Republicans now hold a narrow majority of 51 seats to 49 seats for Democrats.
The Democrats look poised to take control of the US House of Representatives for the first time in eight years in the first major election since Donald Trump became president - but Republicans are set to hold the Senate.
Democrats' control of the House also means they will run all of the lower chamber's committees.
A simple House majority would be enough to impeach Trump if evidence surfaces he obstructed justice or that his 2016 campaign colluded with Russian Federation.
History was working against the president in the Senate: 2002 was the only midterm election in the past three decades when the party holding the White House gained Senate seats. Moscow denies meddling and Trump denies any collusion.
"We always knew these races are going to be close", said Rep. Katherine Clark of MA, co-chair of House Democrats' recruitment efforts. "Trump needs help in Congress", Mooney said, adding that he was "disappointed and embarrassed" by the way Democratic senators treated Trump's Supreme Court nominee, Brett Kavanaugh, during his confirmation hearings.
The opposite trends in the House and the Senate speak to the quirks of the political system but also the growing divide between urban, diverse, more affluent Democratic areas and largely white, rural conservative regions.
"I don't care. They can do whatever they want, and I can do whatever I want", Trump said as he deplaned in IN for his second rally of the day. This is common in midterms for the party that does not control the presidency.
The swing in the House came as Democrats overcame gerrymandered districts in a number of states to win seats that in normal election years were out of their reach. However, the new Democratic House majority will end the Republican Party's dominance in Washington for the final two years of Trump's first term with major questions looming about health care, immigration and government spending.
Despite waves of losses in the House there were bright spots to celebrate for the Republicans in the Senate. In Florida's Senate race, Democrat Bill Nelson was in a tight contest with Republican Rick Scott, the state's governor. Some 35 Senate seats were in play, as were nearly 40 governorships and the balance of power in virtually every state legislature. AP VoteCast also showed a majority of voters considered President Trump a factor in their votes.
Actually passing many bills, however, will be hard because the GOP will fall well short of the 60 votes needed to break through Democratic filibusters, procedural delays that kill legislation. GOP House leadership elections are on track to to take the week after the midterm elections.
Democrats turned out to register disapproval of Trump's divisive rhetoric and policies on such issues as immigration and his travel ban targeting several Muslim-majority countries. More women than ever were running, along with military veterans and minorities, many of them motivated by Trump's rise.
"President Trump called Leader Pelosi at 11.45pm (local time) this evening to extend his congratulations on winning a Democratic House Majority", Drew Hamill, a Pelosi spokesman, in a tweet.
It could have been a much bigger night for Democrats, who suffered stinging losses in OH and in Florida, where Trump-backed Republican Ron DeSantis ended Democrat Andrew Gillum's bid to become the state's first African-American governor. She shepherded then president Barack Obama's health law through the House to its contentious, historic passage in 2010.
Republican gains in the Senate are sure to bolster the party's efforts to ram conservative federal judges through confirmation proceedings during a lame duck session that starts next week, as well as next year.
But Trump is such an unusual politician who has made a career overturning conventions and expectations that it's possible he will defy ominous precedents.
Gridlock in Washington will all but eliminate the potential for more tax cuts, which Trump has called for and which many on Wall Street would like.
Democrats picked off two Republican House seats in Florida, including one held by Representative Carlos Curbelo.