Personal relations are very important and are in play all the time. Make positive approaches, not negative or combative ones. Be flexible to local needs. Show how others will benefit too, including officials and the general public. Marshall your allies early.
Most people really like to be helpful, when they can.
Let them know how. Ask them how they can help. Lay the groundwork properly. Informal communication is very effective. These are hardworking, competent, usually very helpful people.