publicist

noun

Etymology: Borrowed from French publiciste, equivalent to public + -ist.

1. A person whose job is to publicize information or events; a publicity agent; a public relations agent or worker.

   “Legendary soul singer Bobby Womack died Friday, Womack’s publicist said. He was 70.”

2. A journalist, often a commentator, who focusses on politics.
3. A scholar, of public or international law.