The sequence of nominating contests is not a neutral scheduling detail. It decides which candidates can afford to stay in the race and which are eliminated before most voters have any say.
Early contests are cheap enough to enter
A small state can be campaigned in with a modest budget and a great deal of personal time, which is exactly the resource profile of a candidate without national name recognition.
That accessibility is the argument for placing small states first. A contest that opened in the largest media markets would be winnable only by candidates who already had money and fame.
The trade-off is that a small electorate, often unrepresentative of the wider party, gets to perform the first round of elimination on behalf of everyone else.
Results function as fundraising signals
Donors and volunteers face genuine uncertainty about which candidate can win, and early results are the first hard information available to resolve it.
A stronger-than-expected finish therefore converts directly into money and staff, while a disappointing one dries both up within days, often before the next contest is held.
This is why exceeding expectations can matter more than the raw placing. The signal is about trajectory, and the people reading it are deciding where to send resources next.
Compression changes the strategy entirely
When many states vote on the same day, retail campaigning becomes impossible and the contest is fought through advertising, which requires money raised well in advance.
States have repeatedly moved their dates earlier to gain influence, and the cumulative effect has been to shorten the window in which an underfunded candidate can build momentum.
Party rules sit underneath the calendar
Nominating contests are party events rather than general elections, so the parties set much of the structure: delegate allocation, thresholds for winning any delegates, and penalties for scheduling violations.
Proportional allocation keeps trailing candidates alive longer, while winner-take-all rules resolve contests faster and reward whoever leads at the moment a large state votes.
Those rules are revised between cycles by party committees, and the revisions usually follow whichever outcome the previous cycle produced that the party disliked.
Withdrawal happens before the votes
Most candidates leave the race for financial reasons rather than electoral ones. Payroll and advertising commitments arrive weekly, and a campaign without incoming money cannot meet them.
The practical field is therefore narrowed by fundraising in the year before voting begins, and the calendar mainly determines how quickly that narrowing becomes visible to the public.