The growing list of official and potential Democratic rivals all have serious resumes and a mix of traditional and non-traditional political backgrounds. Among them are county executives, a congressman, a former attorney general, a state senator, a former NAACP president, a corporate litigator and even a technocrat. For his part, incumbent Governor Hogan has maintained the focus on economic development that helped him win the 2014 gubernatorial election. During his tenure in office he has demonstrated a penchant for adopting policy ideas from across the partisan aisle. All of these candidates — Mr. Hogan and his Democratic rivals — have enough substance to run a campaign based only on their policy ideas, previous accomplishments and goals for the future.