judy: good evening. i'm judy woodruff. on the newshour tonight election day. voters head to the polls for critical primaries in wyoming and in alaska, where sarah palin is trying to mount a political comeback. then the invasion grinds on. a ukrainian nuclear plant is caught in the crossfire of russia's assault, alarming nearby residents. and america addicted. saint louis community leaders fight to combat the opioid crisis as overdose deaths skyrocket among black americans. >> this is a civil rights issue. it's a human rights issue that we need to change. it is a chronic disease and we have stigmatized a chronic disease. >> all that and more on