The Caribbean island of Puerto Rico has held four referendums in the last 45 years on its status. The last one was held Tuesday and was the only time a majority statehood has received a push. As you can see below, its hard to compare the results to past referendums because of the phrasing of questions.
1967 Results (courtesy of Wikipedia)
One ballot question gave voters several different options. Wikipedia says turnout was 65.9 percent.
Commonwealth: 425,132 votes (60.4%)
Statehood: 274,312 votes (39%)
Independence: 4,248 votes (0.6%)
Invalid/Blank votes: 3,601 votes
Total: 703,692 votes
1993 results (courtesy of Wikipedia)
One ballot question gave voters several different options. Wikipedia says turnout was 73.5 percent.
Commonwealth: 826,326 votes (48.6%)
Statehood: 788,296 votes (46.3%)
Independence: 75,620 votes (4.4%)
Invalid/Blank votes: 10,748 votes
Total: 1,700,990 votes
1998 Results (courtesy of Wikipedia)
One ballot question was given, with more options than before. I read somewhere (can’t remember where) that people were offended that the word “territorial” was added in front of commonwealth and that’s why so many people voted none of the above instead.
Statehood: 728,157 votes (46.6%)
Independence: 39,838 votes (2.6%)
Free association: 4,536 (0.3%)
Territorial Commonwealth: 993 votes
None of the above: 787,900 (50.5%)
Invalid/Blank votes: 4,846 votes
Total: 1,556,270 votes