how many votes for 1 seat in parliament

It depends on the country and the election system, because a parliamentary seat is not always tied to a fixed number of votes. In some systems, one seat can be won with about the vote share needed for a single quota, while in others a candidate can win with just a plurality in one district, and in rare cases even one vote can be enough if someone runs unopposed or the rules are very local.

Simple rule

• Proportional systems: roughly the votes needed to equal one seat quota, though thresholds and rounding can change it.

• First-past-the-post systems: the winner just needs more votes than anyone else in that constituency, not a national total.

• Mixed systems: there may be both constituency seats and list seats, so the answer depends on which seat you mean.

Example

In the Dutch parliament, the electoral quota is the number of votes needed for one seat, and candidates above 25% of that quota can be certain of a seat if their party wins enough seats. In Germany, seats are tied to second votes, and a party with about 20% of second votes would hold about 20% of the seats.

Practical takeaway

If you mean “how many votes are needed to win one seat?” , the honest answer is: it varies by country, election law, district size, and whether the system is proportional or winner-take-all. If you tell me the country, I can give the exact number or formula.