Complex sentence: He ran on a campaign of opposition to abortion, simplifying business regulations, dramatic fiscal reform to the state budget, and outsider credentials after he became disillusioned with the Republican party and calling it a dysfunctional organization.
Split into simpler sentences: He ran on a campaign of opposition to abortion, simplifying business regulations, dramatic fiscal reform to the state budget, and outsider credentials. Explaining his reason to run as a third-party, he explained his disillusionment with the Republican party and calling it a dysfunctional organization.