Political scientists Julia Azari and Seth Masket say a more organized progressive faction is one of the reasons leftist candidates are increasingly winning Dem primaries .

Political scientists Julia Azari and Seth Masket say a more organized progressive faction is one of the reasons leftist candidates are increasingly winning Dem primaries .

Political scientists Julia Azari and Seth Masket say that a myriad of factors are powering recent progressive wins in Dem primaries.