Harris has yet to announce her running mate. (RYAN COLLERD/AFP via Getty Images)
"And I cannot think of a better partner than our governor, Josh Shapiro," the mayor said in the video.
The post read, "Proud to be back with so many leaders from across our region supporting @KamalaHarris for President and @JoshShapiroPA for VP! We are One CITY, One REGION, and ONE Commonwealth United!"
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While social media users were quick to speculate the post was leaked by a staffer accidentally, revealing the much-anticipated selection of the vice president's running mate, a source familiar with Parker's political operation denied this.
The source told Fox News Digital the video was posted purposely as an endorsement of her longtime friend and hometown governor Josh Shapiro as he’s being considered to be Harris' running mate.
Shapiro is on Harris' shortlist for running mate. (Gilbert Carrasquillo/GC Images)
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In a statement, a Harris campaign spokesperson told Fox News Digital, "Vice President Harris has directed her team to begin the process of vetting potential running mates. That process has begun in earnest and we do not expect to have additional updates until the Vice President announces who will be serving as her running mate and as the next Vice President of the United States."
A spokesperson for Shapiro declined to comment to Fox News Digital.
Julia Johnson is a politics writer for Fox News Digital and Fox Business, leading coverage of the U.S. Senate. She was previously a politics reporter at the Washington Examiner.
Follow Julia's reporting on X at @JuliaaJohnson_ and send tips to Julia.Johnson@fox.com.
https://www.foxnews.com/politics/philadelphia-mayors-social-media-video-sparks-speculation-leaked-kamala-harris-running-mate