US Vice President Kamala Harris is expected to announce her running mate by tomorrow after conducting interviews with top contenders at her Washington home over the weekend, two sources with knowledge of the matter say.

Harris’s decision may be announced at any time ahead of her first public appearance with the vice presidential nominee tomorrow in Philadelphia, before they start a cross-country tour across several battleground states likely to decide the election, the sources say.

Harris closed out her search by interviewing three top candidates — Minnesota Governor Tim Walz, US Senator Mark Kelly of Arizona and Pennsylvania Governor Josh Shapiro — at her Naval Observatory residence in Washington yesterday, the sources say.

The vice president met with Transportation Secretary Pete Buttigieg for 90 minutes on Friday and was also meeting candidates virtually, the sources say. Kentucky Governor Andy Beshear and Illinois Governor J.B. Pritzker are the other candidates in contention for the job.