Complex sentence: Lois's campaign soon falters, however, as Mayor West proves more politically savvy than she--while Lois bores voters with detailed plans to improve the city, Mayor West uses glittering generalities and statements completely unrelated to the questions posed to him.
Split into simpler sentences: Lois's campaign soon falters, however, as Mayor West proves more politically savvy than she. While Lois bores voters with detailed plans to improve the city, Mayor West uses glittering generalities and statements completely unrelated to the questions posed to him.