Full interview: Alexandra Rojas talks about how the Democratic Party is changing

The looming battle over who will replace retiring Supreme Court Justice Anthony Kennedy is likely to galvanize Republican voters for this fall's midterm elections. But it's also likely to play a big role in Democratic Party politics as senators from states that President TrumpDonald John Trump2020 Democrats spar over socialism ahead of first debate Senate passes .5 billion border bill, setting up fight with House 'Teflon Don' avoids the scorn of the 'family values' GOP — again MORE won in 2016 will feel pressure to vote to confirm his nominee. At the same time, however, the party's more liberal voters want Democrats to hold fast against Trump.

Some of that struggle is likely to manifest within various state-level Democratic primary elections in which insurgents like Alexandria Ocasio-Cortez (D) in New York are seeking to dislodge centrist party leaders. Hill.TV invited Alexandra Rojas, the executive director of Justice Democrats, a progressive political action committee, to talk about her group's efforts to field more left-leaning candidates across the country.