The Latest: At SC convention, Sanders hammers Dem centrists

Bernie Sanders is hammering back at a centrist Democratic group he says is dismissing him as an "existential threat" to the party's 2020 hopes.The Vermont senator and second-time presidential candidate hammered Third Way as a corporate-financed group as he spoke Saturday at the South Carolina Democratic convention.Some of the group's members have garnered fresh attention for warming toward liberal Sen. Elizabeth Warren.