from typing import List


def unique_votes(groups: List[List[str]]) -> int:
    """Counts the sum of answers intersecting in a group.
    """
    votes = 0
    for group in groups:
        union_group = set(group[0])
        for person in group:
            union_group = union_group.intersection(person)
        votes += len(union_group)
    return votes