Complex sentence: In 2000, in his second attempt for the seat, he defeated incumbent Ramona Barnes, who had been the first female Speaker of the House, and was previously defeated for renomination to her House seat in 1984 before regaining it two years later.
Split into simpler sentences: In 2000, in his second attempt for the seat, he defeated incumbent Ramona Barnes. She had been the first female speaker of the House, and was previously defeated for renomination to her House seat in 1984 before regaining it two years later.