Milwaukee leaders announced [in late February] an intent to bid for the 2020 Democratic National Convention.

“This is a very big day for the City of Milwaukee,” said Milwaukee Mayor Tom Barrett. “We have wanted to make this bid for many years. With all of the progress and momentum our City has right now, this is the perfect moment for Milwaukee to rise on the national stage.” – Milwaukee Journal Sentinal

They are proposing to use the new Milwaukee Buck’s arena, which will open this fall.

And then they brought the bid to DC:

Thursday night in Washington, the people pushing Milwaukee’s bid for the next Democratic convention made the case directly to party insiders at a reception during the Democratic National Committee winter meeting in Washington, complete with a raffle of Bucks,

Brewers and Packers gear displayed on cheesehead hats and a brief stop-by from DNC chair Tom Perez which he stressed was not an endorsement.