Wow,thanks for the homework. If I am reading the spreadsheet correctly the total population from column B is 216 million. The various single categories in column B sum to 92 million. You are right. Not a majority, but still a sizable group.
No, you aren't reading the spreadsheet correctly, CM. The total population figures from column B do not represent the number of actual voters, they represent the total number of people in the country who are eligible to vote. The numbers I cited in my previous post reflect the numbers of actual voters, which you will find listed in column G, not column B.
Note also columns I and J, entitled "did not vote". You'll see that among married persons, only 34.8% did not vote, whereas among those who are divorced, 44% did not vote, and among persons who had never been married, 52.8% did not vote.
This helps further to explain the huge disparity in the size of the voting blocs of married versus unmarried persons.
