| Country: | Philippines |
| Flag Year: | 1936 |
| Date: | June 18, 1940 |
| Part1 Subject: | On creating a bicameral legislature |
| Part1 Choice1: | For |
| Part1 Percentage1: | 79.14 |
| Part1 Choice2: | Against |
| Part1 Percentage2: | 20.86 |
| Part2 Subject: | On having president and vice president re-elected |
| Part2 Choice1: | For |
| Part2 Percentage1: | 81.67 |
| Part2 Choice2: | Against |
| Part2 Percentage2: | 18.33 |
| Part3 Subject: | On creating a Commission on Elections |
| Part3 Choice1: | For |
| Part3 Percentage1: | 77.95 |
| Part3 Choice2: | Against |
| Part3 Percentage2: | 22.05 |
Plebiscites were held on June 18, 1940 in the Philippines to ratify the following amendments to the Constitution: the extension of the tenure of the President and the Vice-President to four years with reelection for another term; the establishment of a bicameral Congress of the Philippines, with the Senate as the upper house and the House of Representatives as the lower house; and the creation of an independent Commission on Elections composed of three members to supervise all elections and plebiscites.
| Province/City | Yes | No | |
|---|---|---|---|
| Abra | 10,469 | 389 | |
| Agusan | 7,898 | 3,187 | |
| Albay | 17,154 | 8,431 | |
| Antique | 10,867 | 2,643 | |
| Bacolod | 5,490 | 829 | |
| Baguio | 4,478 | 324 | |
| Bataan | 5,870 | 2,790 | |
| Batanes | 1,889 | 125 | |
| Batangas | 24,586 | 6,163 | |
| Bohol | 29,539 | 7,283 | |
| Bukidnon | 2,386 | 1,983 | |
| Bulacan | 23,663 | 10,801 | |
| Cagayan | 13,098 | 4,620 | |
| Camarines Norte | 5,252 | 2,302 | |
| Camarines Sur | 21,860 | 4,709 | |
| Capiz | 18,383 | 3,224 | |
| Cavite | 4,992 | 5,042 | |
| Cavite City | 809 | 967 | |
| Cebu | 35,875 | 19,220 | |
| Cebu City | 4,859 | 7,135 | |
| Cotabato | 10,088 | 3,613 | |
| Davao | 4,934 | 4,146 | |
| Davao City | 1,664 | 2,892 | |
| Ilocos Norte | 13,339 | 8,129 | |
| Ilocos Sur | 14,041 | 5,370 | |
| Iloilo | 57,108 | 5,360 | |
| Iloilo City | 4,147 | 1,667 | |
| Isabela | 20,868 | 2,349 | |
| La Union | 12,741 | 3,857 | |
| Laguna | 40,250 | 4,420 | |
| Lanao | 46,743 | 2,338 | |
| Leyte | 53,545 | 17,017 | |
| Manila | 25,667 | 12,059 | |
| Marinduque | 2,638 | 3,558 | |
| Masbate | 9,956 | 1,211 | |
| Mindoro | 9,823 | 1,247 | |
| Misamis Occidental | 11,310 | 2,844 | |
| Misamis Oriental | 7,789 | 7,877 | |
| Mountain Province | 7,110 | 2,268 | |
| Negros Occidental | 108,235 | 6,555 | |
| Negros Oriental | 17,471 | 3,722 | |
| Nueva Ecija | 28,437 | 8,784 | |
| Nueva Vizcaya | 2,349 | 1,451 | |
| Palawan | 3,270 | 1,992 | |
| Pampanga | 18,984 | 6,388 | |
| Pangasinan | 45,319 | 13,076 | |
| Quezon City | 2,109 | 239 | |
| Rizal | 39,137 | 9,721 | |
| Romblon | 3,646 | 1,528 | |
| Samar | 44,447 | 6,231 | |
| San Pablo | 9,656 | 14 | |
| Sorsogon | 30,557 | 2,422 | |
| Sulu | 10,372 | 788 | |
| Surigao | 7,060 | 8,124 | |
| Tagaytay | 365 | 2 | |
| Tarlac | 11,542 | 6,311 | |
| Tayabas | 32,928 | 7,444 | |
| Zambales | 11,938 | 1,444 | |
| Zamboanga | 6,951 | 3,065 | |
| Zamboanga City | 5,761 | 1,494 | |
| Total | 1,043,712 | 275,184 |
| Province/City | Yes | No | |
|---|---|---|---|
| Abra | 10,494 | 353 | |
| Agusan | 7,899 | 2,956 | |
| Albay | 18,505 | 7,020 | |
| Antique | 11,295 | 2,204 | |
| Bacolod | 5,530 | 799 | |
| Baguio | 4,539 | 261 | |
| Bataan | 6,214 | 2,399 | |
| Batanes | 1,647 | 104 | |
| Batangas | 25,812 | 4,902 | |
| Bohol | 30,017 | 7,187 | |
| Bukidnon | 2,563 | 1,840 | |
| Bulacan | 24,794 | 9,574 | |
| Cagayan | 13,838 | 3,854 | |
| Camarines Norte | 5,695 | 1,825 | |
| Camarines Sur | 22,607 | 3,771 | |
| Capiz | 18,962 | 2,782 | |
| Cavite | 5,776 | 4,296 | |
| Cavite City | 908 | 852 | |
| Cebu | 37,971 | 18,653 | |
| Cebu City | 5,119 | 6,881 | |
| Cotabato | 10,608 | 2,928 | |
| Davao | 5,492 | 3,540 | |
| Davao City | 1,839 | 2,703 | |
| Ilocos Norte | 14,163 | 7,252 | |
| Ilocos Sur | 14,158 | 4,606 | |
| Iloilo | 57,405 | 4,698 | |
| Iloilo City | 4,164 | 1,553 | |
| Isabela | 20,860 | 1,922 | |
| La Union | 13,284 | 3,273 | |
| Laguna | 39,523 | 3,819 | |
| Lanao | 46,992 | 1,831 | |
| Leyte | 53,736 | 16,219 | |
| Manila | 27,621 | 9,731 | |
| Marinduque | 3,415 | 2,806 | |
| Masbate | 10,075 | 1,043 | |
| Mindoro | 10,221 | 834 | |
| Misamis Occidental | 11,328 | 2,740 | |
| Misamis Oriental | 7,987 | 7,644 | |
| Mountain Province | 7,765 | 1,625 | |
| Negros Occidental | 108,332 | 5,972 | |
| Negros Oriental | 17,738 | 3,357 | |
| Nueva Ecija | 29,453 | 7,595 | |
| Nueva Vizcaya | 2,499 | 1,291 | |
| Palawan | 3,666 | 1,575 | |
| Pampanga | 19,910 | 5,329 | |
| Pangasinan | 47,322 | 10,652 | |
| Quezon City | 2,139 | 198 | |
| Rizal | 40,797 | 7,805 | |
| Romblon | 3,878 | 1,246 | |
| Samar | 45,234 | 5,646 | |
| San Pablo | 9,648 | 23 | |
| Sorsogon | 30,942 | 2,031 | |
| Sulu | 10,443 | 709 | |
| Surigao | 8,310 | 6,821 | |
| Tagaytay | 367 | 0 | |
| Tarlac | 12,219 | 5,518 | |
| Tayabas | 32,887 | 6,439 | |
| Zambales | 12,223 | 1,142 | |
| Zamboanga | 7,465 | 2,520 | |
| Zamboanga City | 5,746 | 1,483 | |
| Total | 1,072,039 | 240,632 |
| Province/City | Yes | No | |
|---|---|---|---|
| Abra | 10,486 | 365 | |
| Agusan | 5,276 | 5,361 | |
| Albay | 17,623 | 7,999 | |
| Antique | 11,051 | 2,428 | |
| Bacolod | 5,531 | 780 | |
| Baguio | 4,535 | 260 | |
| Bataan | 5,499 | 3,060 | |
| Batanes | 1,857 | 130 | |
| Batangas | 24,334 | 6,292 | |
| Bohol | 28,849 | 7,874 | |
| Bukidnon | 2,367 | 1,986 | |
| Bulacan | 23,122 | 11,125 | |
| Cagayan | 13,210 | 4,341 | |
| Camarines Norte | 5,402 | 1,998 | |
| Camarines Sur | 21,651 | 5,432 | |
| Capiz | 18,905 | 2,903 | |
| Cavite | 5,062 | 4,878 | |
| Cavite City | 822 | 910 | |
| Cebu | 37,574 | 18,785 | |
| Cebu City | 4,843 | 7,096 | |
| Cotabato | 10,412 | 3,209 | |
| Davao | 5,095 | 3,872 | |
| Davao City | 1,711 | 2,787 | |
| Ilocos Norte | 13,312 | 8,001 | |
| Ilocos Sur | 14,104 | 5,052 | |
| Iloilo | 57,234 | 4,872 | |
| Iloilo City | 4,164 | 1,647 | |
| Isabela | 20,253 | 2,479 | |
| La Union | 12,344 | 3,795 | |
| Laguna | 35,257 | 7,978 | |
| Lanao | 45,401 | 3,585 | |
| Leyte | 45,054 | 23,314 | |
| Manila | 25,476 | 11,567 | |
| Marinduque | 2,213 | 3,897 | |
| Masbate | 9,859 | 1,195 | |
| Mindoro | 9,866 | 1,146 | |
| Misamis Occidental | 11,074 | 2,979 | |
| Misamis Oriental | 7,543 | 7,256 | |
| Mountain Province | 6,476 | 1,947 | |
| Negros Occidental | 107,213 | 7,231 | |
| Negros Oriental | 17,504 | 3,548 | |
| Nueva Ecija | 28,624 | 8,476 | |
| Nueva Vizcaya | 1,376 | 2,399 | |
| Palawan | 3,274 | 1,923 | |
| Pampanga | 18,588 | 6,419 | |
| Pangasinan | 45,570 | 12,330 | |
| Quezon City | 2,090 | 253 | |
| Rizal | 38,397 | 9,938 | |
| Romblon | 3,591 | 1,506 | |
| Samar | 44,268 | 6,262 | |
| San Pablo | 7,543 | 1,750 | |
| Sorsogon | 30,187 | 2,558 | |
| Sulu | 10,440 | 703 | |
| Surigao | 7,182 | 7,927 | |
| Tagaytay | 367 | 0 | |
| Tarlac | 11,672 | 5,954 | |
| Tayabas | 31,349 | 7,808 | |
| Zambales | 11,767 | 1,258 | |
| Zamboanga | 4,919 | 2,180 | |
| Zamboanga City | 6,838 | 2,919 | |
| Total | 1,017,606 | 287,923 |