By Hannah Jewell and Jamie Ross

Listen to this briefing

Good morning. It’s Wednesday, Aug. 12, and we solemnly swear to uphold these 12 official rules for the hotel breakfast buffet. Now let’s get to the news.

	There was an upset in the Democratic primary for Wisconsin governor.

• What happened? David Crowley, the top elected official in Milwaukee County, pulled off a surprise victory for the party establishment. He defeated democratic socialist Francesca Hong.

• Elsewhere: Progressive Democrats notched a win in a Minnesota Senate primary. MyPillow founder Mike Lindell did not advance in the Minnesota governor race. See our takeaways here.

Democrats are demanding a briefing on Trump’s secret flight from Turkey.

• This week: The Post reported that an Iranian threat prompted the White House to carry out an elaborate ruse to conceal Trump’s travel. The extraordinary episode is raising questions.

• Trump covertly left Air Force One in a catering truck: A U.S. official told The Post who joined him in the vehicle. The list includes some of Trump’s most loyal aides, but no Cabinet officials.

	Trump officials plan to spend at least $900 million on White House construction.

• Where is the money coming from? Mainly taxpayers, according to records reviewed by The Post. The new price tag is significantly larger than has been previously reported.

• More D.C. news: The Kennedy Center was ordered to pay $252,000 to an artist who opposed the center’s Trump name change. And an enslaver’s statue has a prominent new home.

• Last night: Trump briefly starred at his Patriot Games in Ohio.

Contractors have started bulldozing parts of Big Bend National Park.

• Why? The Trump administration is pushing forward with a $46.5 billion effort to expand security along the Mexico border. Residents say it will destroy critical animal habitats.

• Meanwhile, in Europe: Extreme heat is drying up the continent’s major rivers, including the Danube and Rhine. See the record-low water levels in these striking images.

Polymarket let users bet on wildfires, raising concerns of arson.

• Last year: Polymarket let people bet on the spread of the deadly Los Angeles fires. More than $1 million in fire-related bets had been wagered by the time they were contained.

• Now: As fires burn in California and Washington state, nine lawmakers are calling for limits on payouts, warning that betting could create an incentive for people to light fires.

Spending less time sitting could cut your risk of 13 cancers.

• Apologies if you’re sitting comfortably: But a new study offered a detailed look at how replacing sitting time with different kinds of activities could affect your cancer risk.

• The results: Vigorous movement, such as hurrying up and down the stairs, was the most effective way to reduce cancer risk. You can see the impact of other activities here.

What is this year’s song of the summer? We followed the data.