Guanacaste is one of the seven multi-member constituencies of the Legislative Assembly, the national legislature of Costa Rica. The constituency was established in 1949 when the Legislative Assembly was established by the modified constitution imposed by the Figueres dictatorship. It is conterminous with the province of Guanacaste. The constituency currently elects four of the 57 members of the Legislative Assembly using the closed party-list proportional representation electoral system. At the 2022 general election it had 259,994 registered electors.

Electoral system Guanacaste currently elects four of the 57 members of the Legislative Assembly using the closed party-list proportional representation electoral system. Seats are allocated using the largest remainder method using the Hare quota (cociente). Only parties that receive at least 50% of the Hare quota (subcociente) compete for remainder seats. Any seats remaining unfilled after allocation using the quotient system are distributed amongst parties that surpassed the subcociente, is descending order of their total votes in the constituency. The latter process is repeated until all the seats in the constituency are filled.

Election results Summary

Election United PeoplePU / IU / CC2000 /PASO Broad FrontFA Citizens' ActionPAC National RepublicanPRN / PR / PRI / PC National LiberationPLN / PSD Social Christian UnityPUSC / CU / PDC National UnificationPUN / PUN National IntegrationPIN Libertarian MovementPML Social DemocraticProgressPPSD National RestorationPRN colspan=3 colspan=3 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 % Seats Votes % Seats Votes % Seats2022 246 0.19% 0 5,562 4.20% 0 2,646 2.00% 0 34,697 26.21% 2 22,937 17.32% 1 1,665 1.26% 0 922 0.70% 0 16,551 12.50% 1 2,579 1.95% 02018 3,163 2.27% 0 13,822 9.94% 0 32,486 23.36% 2 20,654 14.85% 1 17,095 12.29% 0 4,467 3.21% 0 21,864 15.72% 12014 21,769 16.01% 1 15,660 11.52% 0 47,024 34.58% 2 19,085 14.03% 1 330 0.24% 0 12,278 9.03% 0 4,696 3.45% 02010 2,778 2.19% 0 14,729 11.61% 0 54,676 43.11% 3 13,951 11.00% 0 418 0.33% 0 17,162 13.53% 1 2006 199 0.19% 0 17,194 16.58% 1 46,353 44.70% 3 11,282 10.88% 0 412 0.40% 0 7,511 7.24% 0 2002 822 0.79% 0 10,688 10.29% 0 40,575 39.07% 2 39,378 37.91% 2 388 0.37% 0 2,865 2.76% 0 1998 616 0.62% 0 33,670 33.66% 2 50,067 50.05% 3 547 0.55% 0 1,079 1.08% 0 1994 50,115 47.23% 3 46,717 44.02% 2 1990 998 1.00% 0 46,016 46.12% 2 50,408 50.52% 3 1986 1,325 1.45% 0 43,575 47.63% 3 41,726 45.60% 2 1982 3,051 3.91% 0 46,320 59.38% 3 25,590 32.81% 2 1978 2,933 4.20% 0 30,078 43.04% 2 31,801 45.50% 3 2,897 4.15% 0 1974 1,877 3.23% 0 3,396 5.85% 0 26,745 46.04% 3 2,543 4.38% 0 13,892 23.92% 2 1970 717 1.46% 0 26,422 53.96% 3 404 0.83% 0 18,353 37.48% 3 1966 20,228 51.51% 3 15,233 38.79% 3 1962 10,377 32.21% 2 16,839 52.27% 3 3,844 11.93% 1 1958 3,340 17.77% 1 8,722 46.41% 3 4,703 25.02% 1 1953 7,937 53.25% 3 1,608 10.79% 0 1949 1 0 4

Detailed 2020s 2022 Results of the 2022 general election held on 6 February 2022:

Party Votes per canton Totalvotes % SeatsAban-gares Bagaces Cañas Carrillo Hojan-cha La Cruz Liberia Nanda-yure Nicoya SantaCruz Tilarán National Liberation Party PLN 2,049 1,765 4,335 4,508 958 1,456 5,260 1,598 4,792 4,555 3,421 34,697 26.21% 2 Social Christian Unity Party PUSC 865 620 811 1,484 776 746 6,597 1,220 5,626 3,028 1,164 22,937 17.32% 1 Social Democratic Progress Party PPSD 1,012 1,186 1,157 1,173 438 494 2,316 373 3,153 3,243 2,006 16,551 12.50% 1 New Republic Party PNR 1,329 733 954 1,276 223 945 2,426 301 1,605 1,667 763 12,222 9.23% 0 Guanacastecan Union Party PUG 297 813 652 1,144 260 1,027 2,379 346 1,214 1,687 267 10,086 7.62% 0 Broad Front FA 220 395 302 327 129 155 1,005 199 1,429 949 452 5,562 4.20% 0 Progressive Liberal Party PLP 243 227 269 397 113 157 1,037 80 585 1,348 287 4,743 3.58% 0 Accessibility without Exclusion PASE 114 86 83 279 19 260 907 57 316 996 52 3,169 2.39% 0 Citizens' Action Party PAC 89 179 164 192 59 97 418 43 231 910 264 2,646 2.00% 0 National Restoration Party PRN 123 393 218 200 33 153 299 350 383 320 107 2,579 1.95% 0 Social Christian Republican Party PRSC 101 131 315 168 83 159 304 85 321 384 395 2,446 1.85% 0 A Just Costa Rica CRJ 58 49 82 511 21 45 300 32 678 247 50 2,073 1.57% 0 National Force Party PFN 27 39 48 98 73 33 175 127 910 352 43 1,925 1.45% 0 National Integration Party PIN 194 22 23 71 36 39 214 74 554 417 21 1,665 1.26% 0 New Generation Party PNG 347 58 48 94 34 61 112 56 399 180 65 1,454 1.10% 0 Costa Rican Social Justice Party JSC 65 75 146 97 50 87 205 49 260 213 59 1,306 0.99% 0 United We Can UP 51 398 247 23 15 21 106 44 77 97 23 1,102 0.83% 0 Libertarian Movement PML 475 31 59 31 13 16 78 15 98 74 32 922 0.70% 0 Costa Rican Democratic Union PUCD 13 71 18 59 60 22 92 162 324 85 12 918 0.69% 0 Costa Rican SocialDemocratic Movement PMSDC 26 19 31 80 16 15 104 10 97 309 38 745 0.56% 0 Liberal Union Party UL 82 48 45 62 14 20 139 33 79 130 62 714 0.54% 0 National Encounter Party PEN 23 17 23 17 64 5 65 18 224 28 65 549 0.41% 0 Christian Democratic Alliance ADC 34 30 32 73 21 29 74 28 107 88 32 548 0.41% 0 Our People Party PNP 14 14 20 29 6 5 128 10 47 37 6 316 0.24% 0 Workers' Party PT 11 20 29 26 5 11 40 6 44 62 19 273 0.21% 0 United People PU 7 7 14 29 12 9 26 18 49 60 15 246 0.19% 0Valid votes 7,869 7,426 10,125 12,448 3,531 6,067 24,806 5,334 23,602 21,466 9,720 132,394 100.00% 4Blank votes 86 92 126 172 80 87 210 84 338 359 95 1,729 1.27% Rejected votes – other 104 118 169 201 53 113 383 103 439 526 103 2,312 1.69% Total polled 8,059 7,636 10,420 12,821 3,664 6,267 25,399 5,521 24,379 22,351 9,918 136,435 52.48% Registered electors 14,376 14,900 20,485 26,622 6,336 14,838 49,183 8,887 43,811 44,639 15,917 259,994 Turnout 56.06% 51.25% 50.87% 48.16% 57.83% 42.24% 51.64% 62.12% 55.65% 50.07% 62.31% 52.48%

The following candidates were elected: Melina Ajoy Palma (PUSC); Alejandra Larios Trejos (PLN); Luis Fernando Mendoza Jiménez (PLN); and Daniel Gerardo Vargas Quirós (PPSD).

2010s 2018 Results of the 2018 general election held on 4 February 2018:

Party Votes per canton Totalvotes % SeatsAban-gares Bagaces Cañas Carrillo Hojan-cha La Cruz Liberia Nanda-yure Nicoya SantaCruz Tilarán National Liberation Party PLN 1,653 1,434 2,316 2,818 1,208 1,407 4,842 1,463 7,628 5,360 2,357 32,486 23.36% 2 National Restoration Party PRN 902 1,873 3,060 2,089 442 1,456 3,807 880 3,254 2,093 2,008 21,864 15.72% 1 Social Christian Unity Party PUSC 1,471 844 1,231 1,769 744 948 2,594 876 6,199 2,229 1,749 20,654 14.85% 1 National Integration Party PIN 532 581 1,578 1,041 369 462 1,446 364 1,686 8,509 527 17,095 12.29% 0 Citizens' Action Party PAC 635 1,066 1,035 1,117 571 859 2,949 623 2,003 1,418 1,546 13,822 9.94% 0 Guanacastecan Union Party PUG 353 494 270 1,126 175 773 2,342 345 776 1,112 228 7,994 5.75% 0 Social Christian Republican Party PRSC 223 186 260 638 81 119 884 194 833 862 599 4,879 3.51% 0 Libertarian Movement PML 161 251 155 1,099 154 110 1,063 146 587 470 271 4,467 3.21% 0 Accessibility without Exclusion PASE 133 123 81 270 22 94 2,982 66 154 191 102 4,218 3.03% 0 Costa Rican Renewal Party PRC 226 150 277 584 44 121 1,037 102 380 263 166 3,350 2.41% 0 Broad Front FA 115 326 204 151 49 79 456 217 1,118 271 177 3,163 2.27% 0 Christian Democratic Alliance ADC 1,534 86 144 104 21 62 210 37 160 112 81 2,551 1.83% 0 New Generation Party PNG 47 288 90 257 34 51 507 84 338 171 93 1,960 1.41% 0 Workers' Party PT 19 42 28 50 20 23 137 22 75 106 38 560 0.40% 0Valid votes 8,004 7,744 10,729 13,113 3,934 6,564 25,256 5,419 25,191 23,167 9,942 139,063 100.00% 4Blank votes 63 44 93 95 53 57 160 56 247 191 80 1,139 0.80% Rejected votes – other 175 133 187 302 60 123 392 100 493 520 114 2,599 1.82% Total polled 8,242 7,921 11,009 13,510 4,047 6,744 25,808 5,575 25,931 23,878 10,136 142,801 59.34% Registered electors 13,610 13,686 19,476 24,283 6,014 13,023 44,938 8,464 40,987 41,107 15,049 240,637 Turnout 60.56% 57.88% 56.53% 55.64% 67.29% 51.79% 57.43% 65.87% 63.27% 58.09% 67.35% 59.34%

The following candidates were elected: Luis Antonio Aiza Campos (PLN); Mileyde Alvarado Arias (PRN); Aida María Montiel Héctor (PLN); and (PUSC).

2014 Results of the 2014 general election held on 2 February 2014:

Party Votes per canton Totalvotes % SeatsAban-gares Bagaces Cañas Carrillo Hojan-cha La Cruz Liberia Nanda-yure Nicoya SantaCruz Tilarán National Liberation Party PLN 3,039 1,967 3,144 4,189 1,911 2,024 7,138 2,537 10,826 7,123 3,126 47,024 34.58% 2 Broad Front FA 1,853 1,139 2,028 859 410 1,124 3,931 1,103 4,081 3,790 1,451 21,769 16.01% 1 Social Christian Unity Party PUSC 667 772 667 3,495 267 735 4,999 322 2,505 3,346 1,310 19,085 14.03% 1 Citizens' Action Party PAC 1,044 1,792 2,293 826 394 351 2,966 330 2,020 2,056 1,588 15,660 11.52% 0 Libertarian Movement PML 721 879 529 1,402 322 813 1,966 338 2,903 1,643 762 12,278 9.03% 0 Costa Rican Renewal Party PRC 206 354 231 1,105 202 496 1,369 240 617 1,020 425 6,265 4.61% 0 National Restoration Party PRN 288 182 1,822 190 62 111 646 225 529 424 217 4,696 3.45% 0 New Homeland Party PPN 82 54 102 156 39 30 253 197 533 1,364 515 3,325 2.45% 0 Accessibility without Exclusion PASE 175 102 103 160 144 66 479 83 377 351 159 2,199 1.62% 0 National Advance PAN 9 16 53 272 3 157 57 5 250 1,044 115 1,981 1.46% 0 Workers' Party PT 36 40 42 63 22 30 108 27 140 149 33 690 0.51% 0 New Generation Party PNG 16 24 25 24 96 9 70 40 201 153 30 688 0.51% 0 National Integration Party PIN 25 12 9 23 7 10 40 12 117 52 23 330 0.24% 0Valid votes 8,161 7,333 11,048 12,764 3,879 5,956 24,022 5,459 25,099 22,515 9,754 135,990 100.00% 4Blank votes 95 63 97 96 48 59 134 61 324 214 59 1,250 0.89% Rejected votes – other 185 185 261 234 59 149 363 125 578 608 130 2,877 2.05% Total polled 8,441 7,581 11,406 13,094 3,986 6,164 24,519 5,645 26,001 23,337 9,943 140,117 63.20% Registered electors 12,801 12,446 18,440 22,180 5,487 10,846 41,245 7,979 38,300 37,832 14,132 221,688 Turnout 65.94% 60.91% 61.85% 59.04% 72.64% 56.83% 59.45% 70.75% 67.89% 61.69% 70.36% 63.20%

The following candidates were elected: Marta Arabela Arauz Mora (PLN); Johny Leiva Badilla (PUSC); Juan Rafael Marín Quirós (PLN); and (FA).

2010 Results of the 2010 general election held on 7 February 2010:

Party Votes per canton Totalvotes % SeatsAban-gares Bagaces Cañas Carrillo Hojan-cha La Cruz Liberia Nanda-yure Nicoya SantaCruz Tilarán National Liberation Party PLN 2,691 2,737 5,597 5,469 1,807 2,447 5,631 2,971 11,601 10,001 3,724 54,676 43.11% 3 Libertarian Movement PML 1,077 831 1,183 1,646 378 1,275 1,978 572 2,931 3,537 1,754 17,162 13.53% 1 Citizens' Action Party PAC 686 1,384 1,284 1,018 302 570 1,943 576 1,969 3,518 1,479 14,729 11.61% 0 Social Christian Unity Party PUSC 686 497 987 1,395 301 554 1,976 391 4,226 2,032 906 13,951 11.00% 0 Accessibility without Exclusion PASE 330 336 348 1,003 55 126 8,801 74 557 734 346 12,710 10.02% 0 Costa Rican Renewal Party PRC 399 625 622 894 92 479 1,010 126 709 866 611 6,433 5.07% 0 Patriotic Alliance AP 1,146 317 205 85 579 31 230 326 649 250 153 3,971 3.13% 0 Broad Front FA 376 55 133 315 31 40 193 39 810 613 173 2,778 2.19% 0 National Integration Party PIN 35 18 18 33 6 13 155 21 50 52 17 418 0.33% 0Valid votes 7,426 6,800 10,377 11,858 3,551 5,535 21,917 5,096 23,502 21,603 9,163 126,828 100.00% 4Blank votes 134 118 109 138 93 71 259 99 385 404 131 1,941 1.47% Rejected votes – other 247 132 203 279 59 139 503 148 601 643 208 3,162 2.40% Total polled 7,807 7,050 10,689 12,275 3,703 5,745 22,679 5,343 24,488 22,650 9,502 131,931 66.22% Registered electors 11,481 10,928 17,069 19,540 4,935 9,025 36,952 7,390 34,993 33,780 13,144 199,237 Turnout 68.00% 64.51% 62.62% 62.82% 75.04% 63.66% 61.37% 72.30% 69.98% 67.05% 72.29% 66.22%

The following candidates were elected: