This edition of CoastLine marks the beginning of our election-focused candidate interviews. It also marks the return of CoastLine two days a week – Wednesdays and Thursdays with Sunday re-broadcasts of both. New Hanover County’s Board of Education has three open seats this year. Here are the three Republicans vying for those spots – which carry four-year terms. Two of the Republican candidates are incumbents; one is seeking elected office for the first time. Guests: Lisa Estep, incumbent,