Read the following scenario and answer the question below.
Citizens often choose to join a U.S. political party that represents ideas they believe in. A new voter wants to join a party currently associated with protecting the environment from industrial pollution, implementing regulations on financial firms, protecting civil rights for minorities, and supporting labor unions. The voter also wants to join a party that is considered “mainstream” rather than a smaller party.
Which political party would best match the viewpoints of this new voter?