Harris and her new pick for VP will criss-cross through key battleground states starting next Tuesday with a stop in Philadelphia.
The rally will be held at Temple University's Liacouras Center.
Other stops include western Wisconsin; Detroit, Michigan; Raleigh, North Carolina; Savannah, Georgia; Phoenix, Arizona; and Las Vegas, Nevada.
According to ABC News, six officials are on the vice president shortlist, including Pennsylvania Governor Josh Shapiro and Arizona Senator Mark Kelly.
Shapiro had a dual message for enthusiastic voters in Philadelphia this week, telling them Harris belongs in the White House - and then reminding them of all he's done as governor of battleground Pennsylvania.
While attending a youth basketball event in Philadelphia on Tuesday, Shapiro wouldn't say if he is in the running, or if he has submitted materials. Earlier in the day, the Pennsylvania governor made a stop in North Philadelphia with Treasury Secretary Janet Yellen to discuss resources to help with tax preparation.
In the meantime, Harris advisers, led by former Attorney General Eric Holder, have been combing through reams of paperwork submitted by potential running mates, while the candidate herself is holding personal conversations with the finalists, according to the Associated Press. Harris, according to another person familiar with the matter, is seeking someone with executive experience who can also serve as a governing partner. Notions of a so-called short list have not stopped those on the Democrats' broader national bench from finding the spotlight.
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"I'm not going to talk about the interactions I've had with the campaign," Illinois Gov. J.B. Pritzker declared recently on MSNBC. He added, though: "Let's just say I'm aware that the vetting process is quite an in depth one." Then he listed his accomplishments, offering that he was the only Midwestern governor to raise his state minimum wage to $15 per hour.
Michigan Gov. Gretchen Whitmer, once held out as an ideal nominee if Biden bailed out, has said, more or less, that she's not a contender. But she appeared Monday with Shapiro in Pennsylvania and mused on MSNBC last week that "two women on the ticket would be exciting."
Harris would be the first woman, first Black woman and first person of South Asian descent to serve as president. Many Democrats have argued she should balance her ticket both demographically and politically.
On Wednesday, Former President Donald Trump will hold a rally in Harrisburg. This will be the first time he's back in Pennsylvania since the attempted assassination.
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The Associated Press contributed to this report.