Offers depend on brands/advertisers and their marketing strategies. Some cities and regions are much busier than others. Generally speaking, larger cities and towns have higher odds of getting campaigns compared to smaller cities and less crowded towns.
Some cities have multiple campaigns to choose from, while others are limited to just one campaign. Regardless of how many options there are, drivers can only be wrapped with one advertisement at a time. Even if there are multiple campaigns available, ALL campaign seats are first come, first serve. So, we advise acting quickly upon receiving a campaign offer, or someone will beat ya to it!