PHILADELPHIA — Six years ago, when Sen. Bob Casey (D-PA) was running for his third term, California’s then-Sen. Kamala Harris came to West Philadelphia to help him court voters and do several fundraisers.

At the rally with Casey at her side, Harris pealed off a litany of issues that were important in her support for Casey, including racism, homophobia, distrust in government, sexism, immigration, mass incarceration, and Russian interference in the 2016 presidential election.