Harris address tonight aims to help voters picture her in the White House

What they're saying: The speech "will inform the last week of the campaign on the ground, on the air," the adviser said. Harris will promise to bring people together, reach outside Washington for the best ideas, build consensus and get things done.

• "She'll remind people who she is and where she comes from, and why she takes on big fights on behalf of consumers and anyone who is treated unfairly or overlooked," the adviser said.

The speech will be centered on Harris' vision for America and focus as president, contrasted with former President Trump's — continuing her new frame of her "to-do list" vs. his "enemies list."

• Harris will urge voters to "turn the page" on the Trump era. She'll pledge to put country and common ground above party and self.

Between the lines: The Ellipse was chosen partly because it was the site of Trump's speech on Jan. 6 that incited supporters ahead of their attack on the Capitol.

• And the campaign sees it as symbolic of the good a president can do.

MSNBC is promoting special coverage of Harris' speech, with pregame and postgame analysis shows. "We really hope that you're going to watch that speech with us," Rachel Maddow told her viewers.