Poll: Many a person ____ on their own.
- Votes: 536
- Comments: 2
- Added: April 2004
- Polls: 1,167
- Votes: 687,313
- Comments: 4,844
their refers to plural or more than one, so i chose live it matches better unless there is another syntax that am not aware of
Lives, as in "The Prime Minister lives in Downing Street". Live refers to first person as in "I live in London".