1) Location & Demographics Analysis :
Different neighborhoods tend to attract people that fall within similar demographic groups, which is how campaigns target who to hit with ads, campaign events, etc.
2) (Meaningful) Social Media Analysis :
Everyone today is looking at social media nowadays. politics try to grow awareness of people's business using ads.
3. Separating Good vs Bad Customers :
In politics, showing up to support the candidate when they're in town needs to translate to volunteering or donating for a campaign, or the candidates will lose steam quickly.