| Election Name: | 1988 Washington gubernatorial election |
| Country: | Washington |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1984 Washington gubernatorial election |
| Previous Year: | 1984 |
| Next Election: | 1992 Washington gubernatorial election |
| Next Year: | 1992 |
| Election Date: | November 8, 1988 |
| Image1: | File:Booth Gardner.jpg |
| Nominee1: | Booth Gardner |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 1,166,448 |
| Percentage1: | 62.21% |
| Nominee2: | Bob Williams |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 708,481 |
| Percentage2: | 37.79% |
| Governor | |
| Map Size: | 275px |
| Before Election: | Booth Gardner |
| Before Party: | Democratic Party (United States) |
| After Election: | Booth Gardner |
| After Party: | Democratic Party (United States) |
The 1988 Washington gubernatorial election was held on November 8, 1988. Incumbent Democratic governor Booth Gardner won a second term, defeating Republican state representative Bob Williams in a landslide. This election was the first time since 1960 that an incumbent Democratic governor of Washington was re-elected.
Gardner won the highest share of the vote since Clarence Martin in 1936. Gardner's 62.21% of the vote is third-highest of any gubernatorial candidate in Washington's history.
Gardner's landslide win made him the first Democrat since Clarence Martin in 1936 to carry Chelan County, Garfield County, Lincoln County, San Juan County, Walla Walla County, and Whitman County. However, since this election, no Democrat has won Chelan County, Douglas County, Ferry County, Garfield County, Grant County, Lincoln County, and Okanogan County.
| County | Booth Gardner Democratic | Bob Williams Republican | Margin | Total votes cast | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % | % | % | |||||||||||||
| Adams | 2,228 | 49.83% | 2,243 | 50.17% | -15 | -0.34% | 4,471 | ||||||||
| Asotin | 4,345 | 65.74% | 2,264 | 34.26% | 2,081 | 31.49% | 6,609 | ||||||||
| Benton | 15,407 | 34.44% | 29,333 | 65.56% | -13,926 | -31.13% | 44,740 | ||||||||
| Chelan | 11,037 | 58.10% | 7,961 | 41.90% | 3,076 | 16.19% | 18,998 | ||||||||
| Clallam | 13,776 | 59.43% | 9,406 | 40.57% | 4,370 | 18.85% | 23,182 | ||||||||
| Clark | 45,072 | 57.67% | 33,086 | 42.33% | 11,986 | 15.34% | 78,158 | ||||||||
| Columbia | 918 | 46.55% | 1,054 | 53.45% | -136 | -6.90% | 1,972 | ||||||||
| Cowlitz | 14,154 | 49.25% | 14,584 | 50.75% | -430 | -1.50% | 28,738 | ||||||||
| Douglas | 5,208 | 54.80% | 4,296 | 45.20% | 912 | 9.60% | 9,504 | ||||||||
| Ferry | 1,161 | 57.16% | 870 | 42.84% | 291 | 14.33% | 2,031 | ||||||||
| Franklin | 4,438 | 40.25% | 6,587 | 59.75% | -2,149 | -19.49% | 11,025 | ||||||||
| Garfield | 783 | 58.26% | 561 | 41.74% | 222 | 16.52% | 1,344 | ||||||||
| Grant | 9,383 | 51.52% | 8,830 | 48.48% | 553 | 3.04% | 18,213 | ||||||||
| Grays Harbor | 16,951 | 69.79% | 7,336 | 30.21% | 9,615 | 39.59% | 24,287 | ||||||||
| Island | 12,369 | 57.14% | 9,277 | 42.86% | 3,092 | 14.28% | 21,646 | ||||||||
| Jefferson | 6,378 | 65.90% | 3,300 | 34.10% | 3,078 | 31.80% | 9,678 | ||||||||
| King | 453,572 | 69.89% | 195,378 | 30.11% | 258,194 | 39.79% | 648,950 | ||||||||
| Kitsap | 42,616 | 60.62% | 27,683 | 39.38% | 14,933 | 21.24% | 70,299 | ||||||||
| Kittitas | 6,723 | 63.37% | 3,886 | 36.63% | 2,837 | 26.74% | 10,609 | ||||||||
| Klickitat | 3,482 | 57.09% | 2,617 | 42.91% | 865 | 14.18% | 6,099 | ||||||||
| Lewis | 10,256 | 43.39% | 13,380 | 56.61% | -3,124 | -13.22% | 23,636 | ||||||||
| Lincoln | 2,423 | 51.12% | 2,317 | 48.88% | 106 | 2.24% | 4,740 | ||||||||
| Mason | 9,699 | 60.94% | 6,217 | 39.06% | 3,482 | 21.88% | 15,916 | ||||||||
| Okanogan | 6,824 | 57.33% | 5,078 | 42.67% | 1,746 | 14.67% | 11,902 | ||||||||
| Pacific | 5,513 | 67.39% | 2,668 | 32.61% | 2,845 | 34.78% | 8,181 | ||||||||
| Pend Oreille | 2,317 | 60.43% | 1,517 | 39.57% | 800 | 20.87% | 3,834 | ||||||||
| Pierce | 119,459 | 63.28% | 69,307 | 36.72% | 50,152 | 26.57% | 188,766 | ||||||||
| San Juan | 3,814 | 65.87% | 1,976 | 34.13% | 1,838 | 31.74% | 5,790 | ||||||||
| Skagit | 19,902 | 60.33% | 13,089 | 39.67% | 6,813 | 20.65% | 32,991 | ||||||||
| Skamania | 1,653 | 52.36% | 1,504 | 47.64% | 149 | 4.72% | 3,157 | ||||||||
| Snohomish | 105,357 | 62.53% | 63,123 | 37.47% | 42,234 | 25.07% | 168,480 | ||||||||
| Spokane | 80,678 | 56.72% | 61,571 | 43.28% | 19,107 | 13.43% | 142,249 | ||||||||
| Stevens | 5,880 | 48.48% | 6,249 | 51.52% | -369 | -3.04% | 12,129 | ||||||||
| Thurston | 42,583 | 62.74% | 25,292 | 37.26% | 17,291 | 25.47% | 67,875 | ||||||||
| Wahkiakum | 820 | 52.06% | 755 | 47.94% | 65 | 4.13% | 1,575 | ||||||||
| Walla Walla | 8,916 | 50.36% | 8,789 | 49.64% | 127 | 0.72% | 17,705 | ||||||||
| Whatcom | 31,321 | 62.32% | 18,934 | 37.68% | 12,387 | 24.65% | 50,255 | ||||||||
| Whitman | 9,337 | 60.78% | 6,026 | 39.22% | 3,311 | 21.55% | 15,363 | ||||||||
| Yakima | 29,695 | 49.63% | 30,137 | 50.37% | -442 | -0.74% | 59,832 | ||||||||
| Totals | 1,166,448 | 62.21% | 708,481 | 37.79% | 457,967 | 24.43% | 1,874,929 | ||||||||