NAIROBI, Kenya (AP) — Polling stations across Tanzania opened Wednesday for an election marked by concerns from human rights organizations and the detention of opposition members. President Samia Suluhu Hassan is seeking a second term. She belongs to the ruling Chama Cha Mapinduzi party, which has governed the country since it gained independence in 1961. Queues formed at three polling stations visited by Associated Press journalists. Voting officially began at 7:00 a.m. local time and is