Uusimaa () is one of the 13 electoral districts of the Parliament of Finland, the national legislature of Finland. The district was established as Uusimaa Province (; ) in 1907 when the Diet of Finland was replaced by the Parliament of Finland. It was renamed Uusimaa in 1997. It is conterminous with the region of Uusimaa but excludes the municipality of Helsinki which has its own electoral district. The district currently elects 37 of the 200 members of the Parliament of Finland using the open party-list proportional representation electoral system. At the 2023 parliamentary election it had 801,205 registered electors.

History Uusimaa Province was one 16 electoral districts established by the Election Act of the Grand Duchy of Finland (Suomen Suuriruhtinaanmaan Vaalilaki) passed by the Diet of Finland in 1906. It was conterminous with the province of Uusimaa. The municipalities of Anjala, Elimäki, Jaala and Kuusankoski were transferred from Uusimaa Province to Kymi Province in 1949. Helsinki city was separated into its own electoral district in 1952. The district was renamed Uusimaa in 1997. The municipalities of Artjärvi and Orimattila were transferred from Uusimaa to Häme in 1998.

Electoral system Uusimaa currently elects 37 of the 200 members of the Parliament of Finland using the open party-list proportional representation electoral system. Parties may form electoral alliances with each other to pool their votes and increase their chances of winning seats. However, the number of candidates nominated by an electoral alliance may not exceed the maximum number of candidates that a single party may nominate. Seats are allocated using the D'Hondt method.

Election results Summary Election Left AllianceVas / SKDL / STPV / SSTP Green LeagueVihr Social DemocratsSDP / SDTP / SDP Swedish People'sSFP CentreKesk / ML LiberalsLib / LKP / SK / KE / NP National CoalitionKok / SP Christian DemocratsKD / SKL FinnsPS / SMP / SPP colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats2023 25,754 4.56% 1 43,214 7.64% 3 112,361 19.88% 8 48,959 8.66% 3 26,949 4.77% 2 148,145 26.21% 11 19,717 3.49% 1 102,689 18.17% 72019 26,257 4.80% 2 73,626 13.47% 5 97,107 17.76% 7 49,625 9.08% 3 35,348 6.47% 2 114,243 20.90% 9 14,912 2.73% 1 86,691 15.86% 62015 22,698 4.36% 1 52,034 10.00% 3 86,462 16.62% 6 53,232 10.23% 4 59,749 11.49% 4 124,754 23.99% 9 13,750 2.64% 1 93,411 17.96% 72011 26,094 5.14% 1 45,991 9.07% 3 97,948 19.31% 7 42,252 8.33% 3 32,565 6.42% 2 144,166 28.42% 11 14,288 2.82% 1 95,429 18.82% 72007 31,324 6.73% 2 50,718 10.89% 4 94,215 20.23% 7 44,418 9.54% 3 57,609 12.37% 4 295 0.06% 0 133,885 28.75% 11 19,157 4.11% 1 27,846 5.98% 22003 40,810 9.10% 3 47,033 10.49% 4 114,791 25.59% 9 46,313 10.33% 3 60,641 13.52% 5 3,393 0.76% 0 104,734 23.35% 8 15,936 3.55% 0 5,263 1.17% 11999 39,197 9.43% 3 43,325 10.42% 3 94,049 22.63% 8 46,945 11.29% 4 44,386 10.68% 3 1,027 0.25% 0 105,288 25.33% 9 10,599 2.55% 1 1,521 0.37% 01995 38,847 9.28% 3 34,080 8.14% 2 131,286 31.38% 11 51,465 12.30% 4 32,227 7.70% 2 1,478 0.35% 0 81,574 19.49% 7 7,364 1.76% 1 1,865 0.45% 01991 30,818 7.96% 2 37,952 9.80% 3 87,120 22.49% 7 55,713 14.39% 4 47,090 12.16% 4 3,817 0.99% 0 90,940 23.48% 8 8,383 2.16% 1 11,020 2.85% 11987 28,704 7.28% 2 22,337 5.67% 1 106,454 27.00% 9 50,021 12.69% 4 25,111 6.37% 2 8,088 2.05% 0 104,900 26.61% 9 8,383 2.13% 0 15,867 4.02% 11983 45,876 11.77% 3 12,520 3.21% 1 119,106 30.56% 9 46,892 12.03% 3 27,939 7.17% 1 97,724 25.07% 7 8,263 2.12% 1 28,337 7.27% 21979 58,056 16.10% 4 96,983 26.89% 8 41,629 11.54% 3 25,987 7.20% 2 21,295 5.90% 1 82,741 22.94% 7 13,744 3.81% 1 9,875 2.74% 01975 52,991 16.69% 4 94,233 29.68% 8 39,745 12.52% 2 23,975 7.55% 2 18,391 5.79% 2 59,626 18.78% 5 7,269 2.29% 1 7,181 2.26% 01972 39,591 14.52% 3 90,749 33.28% 8 39,023 14.31% 3 17,743 6.51% 2 19,068 6.99% 1 44,333 16.26% 3 6,361 2.33% 0 13,132 4.82% 11970 34,312 13.66% 3 77,817 30.98% 7 40,220 16.01% 3 19,463 7.75% 2 20,018 7.97% 1 40,181 16.00% 3 1,719 0.68% 0 13,418 5.34% 11966 39,749 17.91% 3 75,080 33.83% 6 37,128 16.73% 3 23,049 10.38% 2 16,968 7.64% 1 21,529 9.70% 2 658 0.30% 0 1,078 0.49% 01962 40,341 20.11% 4 49,929 24.89% 5 39,696 19.79% 3 23,011 11.47% 2 14,082 7.02% 1 21,521 10.73% 2 1,844 0.92% 01958 33,249 20.60% 3 45,130 27.96% 5 35,376 21.91% 4 18,567 11.50% 2 9,703 6.01% 1 16,227 10.05% 1 1,265 0.78% 0 1954 30,021 18.88% 3 47,643 29.96% 5 37,020 23.28% 3 20,613 12.96% 2 10,476 6.59% 1 12,936 8.14% 1 1951 66,368 19.59% 6 97,815 28.87% 10 72,388 21.36% 7 19,066 5.63% 2 29,950 8.84% 3 50,633 14.94% 5 1948 65,970 19.39% 6 94,402 27.74% 9 76,150 22.38% 7 17,258 5.07% 1 22,466 6.60% 2 61,346 18.03% 6 1945 83,478 25.79% 9 73,335 22.66% 7 67,978 21.00% 6 14,014 4.33% 1 27,689 8.56% 2 47,558 14.69% 5 1939 102,340 44.37% 15 61,063 26.48% 8 6,514 2.82% 1 16,487 7.15% 2 27,077 11.74% 3 1936 87,657 42.14% 12 65,877 31.67% 9 6,866 3.30% 0 16,530 7.95% 2 18,334 8.81% 2 1933 77,031 40.23% 11 58,244 30.42% 9 7,121 3.72% 1 15,874 8.29% 2 24,292 12.69% 3 1930 4,940 2.65% 0 68,547 36.80% 10 51,010 27.38% 8 7,749 4.16% 1 13,931 7.48% 2 26,247 14.09% 4 1929 17,996 12.39% 3 39,875 27.44% 7 52,440 36.09% 10 5,884 4.05% 1 10,190 7.01% 2 18,029 12.41% 3 1927 18,434 12.66% 3 39,612 27.20% 7 52,507 36.06% 10 4,335 2.98% 0 9,991 6.86% 2 20,517 14.09% 4 1924 16,017 11.36% 3 39,088 27.72% 7 51,661 36.63% 9 2,920 2.07% 0 10,346 7.34% 2 20,872 14.80% 4 1922 25,915 18.41% 5 30,160 21.43% 6 52,551 37.33% 10 2,921 2.08% 0 9,534 6.77% 1 19,540 13.88% 3 1919 54,681 37.65% 10 56,087 38.62% 10 1,545 1.06% 0 12,691 8.74% 2 19,153 13.19% 3 1917 68,241 47.04% 12 47,144 32.50% 8 27,815 19.17% 5 1916 55,725 47.52% 12 39,730 33.88% 8 7,545 6.43% 1 13,156 11.22% 2 1913 42,591 41.07% 10 40,308 38.86% 9 5,986 5.77% 1 14,332 13.82% 3 1911 39,475 36.60% 9 45,593 42.27% 10 6,083 5.64% 1 15,355 14.24% 3 1910 40,307 36.59% 9 45,716 41.50% 10 6,786 6.16% 1 15,463 14.04% 3 1909 39,745 36.52% 9 43,123 39.62% 9 6,647 6.11% 1 17,735 16.29% 4 1908 39,687 36.91% 9 41,937 39.00% 9 6,296 5.86% 1 18,199 16.93% 4 1907 40,951 34.87% 9 44,544 37.93% 9 6,521 5.55% 1 20,402 17.37% 4 (Figures in italics represent joint lists.)

Detailed 2020s 2023 Results of the 2023 parliamentary election held on 2 April 2023:

Party Party Electoral AllianceVotes % Seats Votes % Seats National Coalition Party Kok 148,145 26.21% 11 148,145 26.21% 11 Social Democratic Party of Finland SDP 112,361 19.88% 8 112,361 19.88% 8 Finns Party PS 102,689 18.17% 7 102,689 18.17% 7 Swedish People's Party of Finland SFP 48,959 8.66% 3 48,959 8.66% 3 Green League Vihr 43,214 7.64% 3 43,214 7.64% 3 Centre Party Kesk 26,949 4.77% 2 26,949 4.77% 2 Left Alliance Vas 25,754 4.56% 1 25,754 4.56% 1 Movement Now Liik 21,111 3.73% 1 21,111 3.73% 1 Christian Democrats KD 19,717 3.49% 1 19,717 3.49% 1 Freedom Alliance VL 4,848 0.86% 0 5,952 1.05% 0 Crystal Party KRIP 923 0.16% 0 Finnish People First SKE 181 0.03% 0 Liberal Party – Freedom to Choose Lib 4,428 0.78% 0 4,428 0.78% 0 Power Belongs to the People VKK 1,746 0.31% 0 1,746 0.31% 0 Blue-and-Black Movement SML 1,363 0.24% 0 1,363 0.24% 0 Animal Justice Party of Finland EOP 773 0.14% 0 1,178 0.21% 0 Feminist Party FP 405 0.07% 0 Pirate Party Pir 659 0.12% 0 659 0.12% 0 Communist Party of Finland SKP 434 0.08% 0 434 0.08% 0 Birgitta Johansson (Independent) 267 0.05% 0 267 0.05% 0 Finnish Reform Movement KL 247 0.04% 0 247 0.04% 0 Tomi Mäkinen (Independent) 75 0.01% 0 75 0.01% 0 Kansalaisliitto KAL 58 0.01% 0 58 0.01% 0Valid votes 565,306 100.00% 37 565,306 100.00% 37Rejected votes 1,934 0.34% Total polled 567,240 70.80% Registered electors 801,205

The following candidates were elected: Anders Adlercreutz (SFP), 9,442 votes; Otto Andersson (SFP), 4,936 votes; Tiina Elo (Vihr), 3,886 votes; Noora Fagerström (Kok), 6,545 votes; Maria Guzenina (SDP), 12,088 votes; Hjallis Harkimo (Liik), 8,607 votes; Inka Hopsu (Vihr), 4,190 votes; Saara Hyrkkö (Vihr), 4,023 votes; Arja Juvonen (PS), 3,336 votes; Antti Kaikkonen (Kesk), 12,687 votes; Pia Kauma (Kok), 6,199 votes; Teemu Keskisarja (PS), 6,586 votes; Pihla Keto-Huovinen (Kok), 5,223 votes; Kimmo Kiljunen (SDP), 4,759 votes; Ari Koponen (PS), 3,021 votes; Miapetra Kumpula-Natri (SDP), 5,445 votes; Johan Kvarnström (SDP), 4,770 votes; Mia Laiho (Kok), 8,042 votes; Jarno Limnell (Kok), 13,917 votes; Antti Lindtman (SDP), 17,866 votes; Leena Meri (PS), 6,215 votes; Sari Multala (Kok), 7,208 votes; Kai Mykkänen (Kok), 15,072 votes; Susanne Päivärinta (Kok), 6,909 votes; Eemeli Peltonen (SDP), 5,747 votes; Pinja Perholehto (SDP), 5,869 votes; Jorma Piisinen (PS), 7,131 votes; Mika Poutala (KD), 4,883 votes; Riikka Purra (PS), 42,594 votes; Joona Räsänen (SDP), 4,540 votes; Onni Rostila (PS), 5,027 votes; Tere Sammallahti (Kok), 5,277 votes; Jussi Saramo (Vas), 4,944 votes; Pekka Toveri (Kok), 9,667 votes; Heikki Vestman (Kok), 9,836 votes; Eerikki Viljanen (Kesk), 2,787 votes; and Henrik Wickström (SFP), 7,306 votes.

2010s 2019 Results of the 2019 parliamentary election held on 14 April 2019:

Party Party Electoral AllianceVotes % Seats Votes % Seats National Coalition Party Kok 114,243 20.90% 9 114,243 20.90% 9 Social Democratic Party of Finland SDP 97,107 17.76% 7 97,107 17.76% 7 Finns Party PS 86,691 15.86% 6 86,691 15.86% 6 Green League Vihr 73,626 13.47% 5 73,626 13.47% 5 Swedish People's Party of Finland SFP 49,625 9.08% 3 49,625 9.08% 3 Centre Party Kesk 35,348 6.47% 2 35,348 6.47% 2 Left Alliance Vas 26,257 4.80% 2 26,257 4.80% 2 Movement Now Liik 24,778 4.53% 1 24,778 4.53% 1 Christian Democrats KD 14,912 2.73% 1 14,912 2.73% 1 Blue Reform SIN 9,498 1.74% 0 9,498 1.74% 0 Pirate Party Pir 4,083 0.75% 0 5,916 1.08% 0 Liberal Party – Freedom to Choose Lib 1,833 0.34% 0 Seven Star Movement TL 2,754 0.50% 0 2,754 0.50% 0 Communist Party of Finland SKP 1,247 0.23% 0 1,247 0.23% 0 Animal Justice Party of Finland EOP 1,075 0.20% 0 1,075 0.20% 0 Finnish People First SKE 821 0.15% 0 1,073 0.20% 0 Citizens' Party KP 252 0.05% 0 Feminist Party FP 1,030 0.19% 0 1,030 0.19% 0 Independence Party IPU 712 0.13% 0 712 0.13% 0 Communist Workers' Party – For Peace and Socialism KTP 278 0.05% 0 278 0.05% 0 Veeti Salo (Independent) 215 0.04% 0 215 0.04% 0 Reform 183 0.03% 0 183 0.03% 0 Masi Aarnio (Independent) 64 0.01% 0 64 0.01% 0 Teemu Taskinen (Independent) 40 0.01% 0 40 0.01% 0Valid votes 546,672 100.00% 36 546,672 100.00% 36Rejected votes 2,585 0.47% Total polled 549,257 70.70% Registered electors 776,914

The following candidates were elected: Anders Adlercreutz (SFP), 9,425 votes; Hussein al-Taee (SDP), 4,246 votes; Thomas Blomqvist (SFP), 6,137 votes; Tiina Elo (Vihr), 4,190 votes; Maria Guzenina (SDP), 10,005 votes; Timo Harakka (SDP), 5,436 votes; Hjallis Harkimo (Liik), 12,963 votes; Inka Hopsu (Vihr), 6,211 votes; Saara Hyrkkö (Vihr), 4,471 votes; Arja Juvonen (PS), 5,490 votes; Antti Kaikkonen (Kesk), 10,757 votes; Pia Kauma (Kok), 8,597 votes; Pihla Keto-Huovinen (Kok), 3,412 votes; Kimmo Kiljunen (SDP), 4,646 votes; Ari Koponen (PS), 5,383 votes; Noora Koponen (Vihr), 4,748 votes; Johan Kvarnström (SDP), 4,219 votes; Mia Laiho (Kok), 5,664 votes; Antero Laukkanen (KD), 3,499 votes; Elina Lepomäki (Kok), 19,292 votes; Antti Lindtman (SDP), 14,541 votes; Pia Lohikoski (Vas), 2,544 votes; Leena Meri (PS), 9,807 votes; Sari Multala (Kok), 7,724 votes; Kai Mykkänen (Kok), 14,226 votes; Mika Niikko (PS), 7,613 votes; Pirkka-Pekka Petelius (Vihr), 6,331 votes; Riikka Purra (PS), 5,960 votes; Veronica Rehn-Kivi (SFP), 5,660 votes; Antti Rinne (SDP), 12,110 votes; Jussi Saramo (Vas), 3,502 votes; Ruut Sjöblom (Kok), 4,518 votes; Riikka Slunga-Poutsalo (PS), 4,266 votes; Kari Tolvanen (Kok), 4,212 votes; Matti Vanhanen (Kesk), 5,276 votes; and Heikki Vestman (Kok), 7,429 votes.

2015 Results of the 2015 parliamentary election held on 19 April 2015: