MailOnline discovered that 47% of Brits support Prince Harry attending the King's coronation, while 36% oppose.
33% of respondents wanted Meghan at the event, while 43% didn't.
For Prince Andrew, just 26% of those polled endorsed his attendance, with 41% against, including 26% strongly opposed.
A weekend of celebrations will follow the Westminster Abbey coronation on May 6.
The Sussexes are reportedly considering going, although they may wait until they receive a formal invitation.
Harry wishes to reconcile with the Royal Family on this crucial day by being with his father.
Harry's book, Spare, claimed Prince William insulted Meghan, but the Palace didn't comment.
The royals are in a "toxic standoff" and unlikely to apologise before the ceremony.
In two weeks, save-the-date cards will be sent to the 2,000 people who have been invited to the spring ceremony.