Shalala, Bill Clinton's HHS secretary, is the second Democrat to flip a Republican-held House district in the midterms.
Voters in the affluent Northern Virginia suburban district have sent Republicans to Congress for 60 of the past 66 years.
On the eve of an historic midterm election, the president held rallies in three states and made it clear that he sees Tuesday's vote as a referendum on himself and his presidency.
A tide of political and demographic forces has put Virginia's solidly Republican 7th District in play for the first time in recent memory.
A new ad from Donald Trump's campaign focuses heavily on the economy and makes no mention of the president, who is unpopular with female voters.
Three terrible headlines seemed to highlight how ill-prepared Avenatti is mount a national political campaign.
The former presidents were both targeted with pipe bombs this week.
"We want all sides to come together in peace and harmony," Trump said.
The report comes from the Council of Economic Advisers, a nonpartisan executive agency, landing on the heels of President Trump's recent claims that his opponents will turn the U.S. into "the next Venezuela" if they succeed in the midterm elections.
But congressional leaders and White House officials all say they know nothing about any plans for a tax cut before the midterm elections.