1990 Maine gubernatorial election

{{Short description|none}}

{{Use American English|date=January 2025}}

{{Use mdy dates|date=September 2023}}

{{Infobox election

| election_name = 1990 Maine gubernatorial election

| country = Maine

| type = presidential

| ongoing = no

| previous_election = 1986 Maine gubernatorial election

| previous_year = 1986

| next_election = 1994 Maine gubernatorial election

| next_year = 1994

| election_date = November 6, 1990

| image_size = x150px

| image1 = Image:Governor John McKernan official portrait (cropped 2).jpg

| nominee1 = John McKernan

| party1 = Republican Party (United States)

| popular_vote1 = 243,766

| percentage1 = 46.7%

| image2 = Image:Rep Joseph E. Brennan (cropped).jpg

| nominee2 = Joseph Brennan

| party2 = Democratic Party (United States)

| popular_vote2 = 230,038

| percentage2 = 44.1%

| image3 = x110px

| nominee3 = Andrew Adam

| party3 = Independent

| popular_vote3 = 48,377

| percentage3 = 9.3%

| map_image = {{switcher

|280px|County results

|280px|Municipality results}}

| map_size =

| map_caption = McKernan: {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}} {{legend0|#c21b18|80–90%}} {{legend0|#A80000|>90%}}
Brennan: {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} {{legend0|#0d056c|>90%}}
Tie: {{legend0|#decde6ff|30–40%}} {{legend0|#D2B1D9|40–50%}}

| title = Governor

| before_election = John McKernan

| before_party = Republican Party (United States)

| after_election = John McKernan

| after_party = Republican Party (United States)

}}

The 1990 Maine gubernatorial election took place on November 6, 1990 to elect the governor of Maine. Incumbent Republican governor John McKernan won re-election to a second term, defeating Democratic nominee, former governor and incumbent Congressman Joseph E. Brennan in a tight contest. Independent Andrew Adam took in 9.3% of the vote. Both Brennan and McKernan were unopposed in their respective primaries.

This was the last election until 2010 that Maine elected a Republican governor. This was also the last Maine gubernatorial election until 2022 in which the winner was of the same party as the incumbent president. This is also the last Maine gubernatorial election that an incumbent governor won with a smaller margin of victory in their re-election bid.