Most of the North Main community is either in precinct 1(League), 3 (Summit), or 4 (Stone). See this site for all voting locations. http://www.greenvillecounty.org/VoterRegistration/pdf/PrimaryPollSitechgs18.pdf
You will be voting at your usual site tomorrow. If it had changed, you would have received a postcard before now.
Not sure what precinct you are in. Check out this website. https://info.scvotes.sc.gov/eng/voterinquiry/VoterInformationRequest.aspx?PageMode=VoterInfo
Just fill in the information and it will tell you what precinct you are in as well as districts for other elections.
PLEASE get out and vote tomorrow!