Every MEP answers to two lines: their national delegation and their EU political group. When those two take opposite sides on a vote, which one wins? Computed over the last 40 roll-call votes where per-member positions are recorded.
of the time, members side with their country over their group when the two diverge — the other 70% they follow the group line.
14 country-following vs 32 group-following ballots across 46 conflicting calls.
Most often follow their national delegation when it splits from the group.
Most often follow their EU group when it splits from their country.
A "conflict" is a vote where a member's national-delegation for/against majority and their EU group's for/against majority point opposite ways; we record which line the member's own ballot followed. Members with fewer than 4 such conflicts are excluded. Abstentions and non-votes are ignored. Data via the European Parliament Open Data Portal and HowTheyVote.eu.