Immigration. Climate. Abortion. And much more. To help inform voters, the San Diego Union-Tribune asked all the candidates running to represent San Diego County residents in Congress a series of questions about these and other top issues. Here’s who responded, and what they told us about their plans, priorities and positions. Their written answers have been lightly edited for clarity and style. 48th Congressional District: — Stephen Houlahan, Democrat and registered nurse — Darrell Issa, Republican and incumbent, did not respond 49th Congressional District: — Matt Gunderson, Republican and car dealership owner — Mike Levin, Democrat and incumbent 50th Congressional District: — Peter Bono, Republican and retired Navy technician — Scott Peters, Democrat and incumbent 51st Congressional District: — Sara Jacobs, Democrat and incumbent — Bill Wells, Republican and El Cajon mayor 52nd Congressional District: — Juan Vargas, Democrat and incumbent, declined to participate — Justin Lee, Republican and incumbent, did not respond