The noun campaign has 4 senses (first 3 from tagged texts)
1. (9) political campaign, campaign, run -- (a race between candidates for elective office; "I managed his campaign for governor"; "he is raising money for a Senate run")
2. (5) campaign, cause, crusade, drive, movement, effort -- (a series of actions advancing a principle or tending toward a particular end; "he supported populist campaigns"; "they worked in the cause of world peace"; "the team was ready for a drive toward the pennant"; "the movement to end slavery"; "contributed to the war effort")
3. (4) campaign, military campaign -- (several related operations aimed at achieving a particular goal (usually within geographical and temporal constraints))
4. campaign, hunting expedition, safari -- (an overland journey by hunters (especially in Africa))
Overview of verb campaign
The verb campaign has 3 senses (first 2 from tagged texts)
1. (7) campaign, run -- (run, stand, or compete for an office or a position; "Who's running for treasurer this year?")
2. (2) crusade, fight, press, campaign, push, agitate -- (exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for; "The liberal party pushed for reforms"; "She is crusading for women's rights"; "The Dean is pushing for his favorite candidate")
3. campaign, take the field -- (go on a campaign; go off to war)