1973 Swedish general election
Results

Party
Votes
%
Seats
+/–
Swedish Social Democratic Party
2,247,727
43.6
156
–7
Centre Party
1,295,246
25.1
90
+19
Moderate Party
737,584
14.3
51
+10
People's Party
486,028
9.4
34
–24
Left Party Communists
274,929
5.3
19
+2
Christian Democratic Unity
90,388
1.8
0
0
Communist Party of Sweden
18,923
0.4
0
0
Communist League Marxist-Leninist (Revolutionaries)
8,014
0.2
0
New
Other parties
1,307
0.0
0
0
Invalid/blank votes
8,850
–
–
–
Total
5,168,996
100
350
0
Registered voters/turnout
5,690,333
90.8
–
–
Source: Nohlen & Stöver
Source: Nohlen & Stöver
Source: Nohlen & Stöver
Source: Nohlen & Stöver
Source: Nohlen & Stöver

Question: What was the largest party during the 1973 Swedish general election? 
Answer: The Social Democratic remained the largest party, winning 156 of the 350 seats.