By REGINA GARCIA CANO (Associated Press) GUAYAQUIL, Ecuador (AP) — Voters in Ecuador cast their ballots in a special election Sunday to pick a new president, with police and soldiers on guard against unprecedented violence, including the assassination of a candidate this month. Front-runners include an ally of exiled former President Rafael Correa and a millionaire with a security background promising to be tough on crime. Authorities have deployed more than 100,000 police and soldiers to protect the vote against more violence.