Former President Barack Obama is increasingly throwing his political weight behind socialist and socialist-aligned Democrats as the party's left wing gains ground ahead of the midterm elections.Democratic Socialists of America-backed candidates have scored several notable primary victories this year, adding to signs of the left wing's growing influence in Democratic politics ahead of November's midterms. While Obama is not backing every socialist candidate, his recent endorsements and campaign appearances show he is willing to bring some of the party’s most progressive figures into the Democra...