While presidential campaigns traditionally begin after Labor Day, they actual kick off at the nominating conventions held over the summer. Once the conventions have ended, the candidates launch campaigns; some begin even before the conventions.
Start a collection of election memorabilia.
Campaign buttons are a popular thing to collect. Inauguration buttons are also popular after the candidate is elected. Some people save hats with the candidate's slogan which are worn at the political conventions for each party.
Items to collect:
Items with the candidate's name or slogan
Printed copies of slogans
Vote tallies from primaries
Dated copies of actual election day results
Magazine articles (put in sheet protectors and save in a binder)