milk run

noun4

1. •
   A routine trip, especially one involving several stops
2. •
   The collection of mixed loads from multiple fixed sources on a regular basis.
3. •
   (slang) An uneventful mission, especially a military sortie completed without incident
4. •
   (slang) A campaign for a political office whose main apparent purpose is to "milk" money from supporters in order to provide a source of income for the candidate, campaign staff, and family members.