Facts - The Bundestag at a glance - Deutscher Bundestag

The Federal Republic is divided into
299 constituencies, from Flensburg in
Schlewig-Holstein, which is Constituency
No 1, to Homburg in the Saarland,
which is numbered 299. What determines
the balance of power between
parties in the Bundestag is the second
vote. By making this cross on their ballot
papers, voters determine which party
or coalition will win a large enough
share of the vote to elect one of its
members to serve as Federal Chancellor.
Every party can campaign for seats
in the Bundestag by drawing up Land
lists of candidates. The party submits
such a list in one or more federal states,
listing in sequence the candidates it
deems suitable. If a party wins enough
second votes in a given Land to merit
the allocation of ten seats and has won
four constituency seats in that Land, the
party’s top six list candidates take the
remaining six seats. Parties campaigning
in an election are subject, however,
to the 5% hurdle, whereby a party must
win at least five per cent of the national
vote in order to enter the Bundestag.
There is one exception: if a party wins at
least three constituency seats, it enters
Parliament with the number of seats corresponding
to its percentage of second
Palimentary elections
votes even if it falls short of the 5%
threshold. This threshold is designed to
prevent a splintering of the party system
that might weaken Parliament.
In principle, half of the seats in the
Bundestag are distributed on the basis
of the Land lists, while the other half
are constituency seats. This, however,
accounts for only 598 of the 622 seats
(at the start of the electoral term) in the
17th Bundestag. Overhang mandates, as
they are known, were won by the CDU/
CSU in certain Länder and accounted
for the remaining 24 seats. The number
has since dropped to 22, following the
resignation of two CDU/CSU Members
elected in these Länder. An overhang
mandate occurs when the number of
constituency seats won by a party in a
particular Land exceeds the number of
seats to which it would be entitled on
the strength of the second vote. If, for
example, a party wins enough second
votes to merit the allocation of 15 seats
but its candidates secure the largest
share of the vote in 17 constituencies,
it obtains 17 parliamentary seats. After
all, each of the 17 candidates has been
directly elected. This situation would
create two extra seats, or overhang mandates,
in the Bundestag.