Complex sentence: Ishida has been a popular character since the manga's inception, placing 3rd in the first character popularity poll, 8th in the second and 5th in the most recent.
Split into simpler sentences: Ishida has been a popular character since the manga's inception, ranking high in several popularity polls. So far, he has placed 3rd in the first character popularity poll, 8th in the second and 5th in the most recent.