Electoral management bodies may choose to monitor media coverage for a number of reasons:
The first two reasons entail gathering extensive quantitative data - in effect, a full-scale media monitoring project. The other two can be achieved by a more casual and non-systematic review of media coverage, of a type that the EMB may anyway conduct as a matter of routine practice.
As official bodies, media regulatory agencies tasked with media monitoring during elections tend to have similar goals and mandates to EMB media monitoring. Sometimes media regulatory agencies focus only the type of media in their remit, for example broadcast media.
As experience of media monitoring grows, and methodologies are more widely disseminated, it has become more common for EMBs (or other regulatory bodies) to contract outside experts to monitor the media, or to collaborate with them. These may be university media studies or other social science departments or civil society organisations.