The phrase "campaigning efforts" refers to the activities and actions made by a person or a group with the goal of promoting or supporting a particular cause, idea, or candidate in an organized and structured way. Full definition
A large body of evidence shows the major parties focus their greatest constituency campaign efforts on their most marginal contests, the constituencies where a few votes either way might change the result. (democraticaudit.com)
Does all this local campaign effort make any tangible difference to the election results? (democraticaudit.com)
Use their smear campaign efforts against them and turn them in your favor. (mrcustodycoach.com)