I tried an early run-through as Bloomberg 2020, and as he has tons more money than the others you could expand the number of states you can set up as an early base/springboard thru ad buys. Though he also has low stamina, so to campaign effectively you'd need to build up his Command points earlier so he doesn't have to rest as much to recover from hitting the road.
Like I mentioned earlier, best to really avoid ad-buys early in the primary season, as even for Moneybags Bloomberg, placing TV ads widely/frequently early can seriously dent your cash for little result.. Any early 'purchased'