Complex sentence: Finney served four years as the spokesperson and Director of Communications at the Democratic National Committee and is a columnist for "The Hill" and commentator for "Politico", "MSNBC" and "The Huffington Post".
Split into simpler sentences: Finney served four years as the spokesperson and Director of Communications at the Democratic National Committee. She was also a columnist for "The Hill" and commentator for "Politico", "MSNBC" and "The Huffington Post".