You can search with the isaccepted: operator and the votes: operator with tag you want. You just have to keep increasing the vote count until you narrow in to the top answers.
All Time Example:
isaccepted:1 votes:1500
isaccepted:0 votes:1500
All Time Tag Example:
[vba] isaccepted:1 votes:20
[vba] isaccepted:0 votes:20