A third Lamesa Independent School District incumbent and a Mesa Underground Water Conservation District (Mesa UWCD) appointee threw their hats into the May 4 races.Cindy Martinez filed Monday in her re-election bid for her District 2 seat. Kevin Furlow, who was appointed to the board’s Precinct 3 seat, also filed Monday.LISD Board President Rebecca Gonzales and board member April Martinez filed in the race two weeks ago.Mesa UWCD incumbent Brent Stagg, representing the Precinct 1 position, filed in the race a week ago.The Mesa UWCD board appointed Furlow to the Precinct 3 spot, vacated by Al Crisp late last year,