Dr. Abraham has promised to refuse payment if he's elected.
Abraham, 59, has also pulled in a recognizable name as campaign manager: Luke Letlow, who has worked on several Louisiana campaigns over the years, including those of Gov. Bobby Jindal, dating back to his congressional service.
Aside from Abraham, the only others to announce are Monroe businessman Harris Brown, a Republican; Boyce businessman Clay Grant, a Libertarian; and Alexandria attorney and former district attorney Eddie Tarpley, a Republican.
Copyright 2016 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.