A national primary instead of each state

If we were to have a national party primary instead of doing it state-by-state, it would solve the problem of each state wanting to front-load to increase tourism and publicity (like Michigan and Florida this year). But it brings us to the problem of small states being ignored. If we were to have a national primary, there would really be no front-runner decided by the first states, and so candidates would probably ignore the states with fewer votes, deciding that the smaller states like the Dakotas are not important.
If we were to use the internet to campaign instead of television and personal visits, this might solve that problem altogether. Candidates could reach each given state through the internet, getting their message and face out there, and small states wouldn’t be ignored.
In the same way that television changed the way that we vote and who we choose for president, internet would surely make a difference in what we look for in a candidate, but I see nothing wrong with voting evolving along with technology.