Working on candidate activity record (CAR), I'm still a junior, rising senior. Some of the elections for extracurricular activities at my school already took place and I know my positions for senior year. Am I allowed to include those in the CAR?
Yes, you should anticipate and note all of the activities, sports, etc. in which you plan to participate throughout your entire senior year. I also advise my students to 'update' admissions as other roles and activities materialize during their senior year (after you have submitted your SSK or other academy applications).