投開票の結果、現職の蒲島が3選を果たした。
※当日有権者数：1,458,108人 最終投票率：51.01%（前回比：+12.57pts）
| 候補者名 | 年齢 | 所属党派 | 新旧別 | 得票数 | 得票率 | 推薦・支持 |
|---|
| 蒲島郁夫 | 69 | 無所属 | 現 | 504,931票 | 68.16% | |
| 幸山政史 | 50 | 無所属 | 新 | 201,951票 | 27.26% | |
| 寺内大介 | 50 | 無所属 | 新 | 33,955票 | 4.58% | |
市町村別開票結果[5]
| 市区町村 |
蒲島郁夫 |
幸山政史 |
寺内大介 |
|---|
| 得票 |
% |
得票 |
% |
得票 |
% |
| 合計 |
504,931 |
68.16% |
201,951 |
27.26% |
33,955 |
4.58% |
| 熊本市中央区 |
40,505 |
65.16% |
17,986 |
28.94% |
3,668 |
5.90% |
| 熊本市東区 |
45,935 |
67.83% |
18,150 |
26.80% |
3,631 |
5.36% |
| 熊本市西区 |
23,027 |
64.80% |
10,922 |
30.73% |
1,589 |
4.47% |
| 熊本市南区 |
31,455 |
65.23% |
14,921 |
30.94% |
1,843 |
3.82% |
| 熊本市北区 |
33,537 |
60.67% |
19,313 |
34.94% |
2,432 |
4.40% |
| 八代市 |
35,137 |
69.50% |
13,301 |
26.31% |
2,117 |
4.19% |
| 人吉市 |
9,872 |
65.65% |
4,439 |
29.52% |
726 |
4.83% |
| 荒尾市 |
10,727 |
64.47% |
4,686 |
28.16% |
1,227 |
7.37% |
| 水俣市 |
7,843 |
66.87% |
2,918 |
24.88% |
967 |
8.25% |
| 玉名市 |
19,667 |
66.79% |
8,894 |
30.21% |
883 |
3.00% |
| 天草市 |
30,637 |
70.01% |
9,752 |
22.28% |
3,373 |
7.71% |
| 山鹿市 |
22,696 |
85.81% |
3,198 |
12.09% |
554 |
2.09% |
| 菊池市 |
16,340 |
76.47% |
4,320 |
20.22% |
707 |
3.31% |
| 宇土市 |
10,332 |
67.39% |
4,455 |
29.06% |
544 |
3.55% |
| 上天草市 |
8,993 |
64.15% |
4,242 |
30.26% |
784 |
5.59% |
| 宇城市 |
17,960 |
69.01% |
7,063 |
27.14% |
1,004 |
3.86% |
| 阿蘇市 |
8,551 |
68.74% |
3,411 |
27.42% |
478 |
3.84% |
| 合志市 |
15,881 |
67.76% |
6,469 |
27.60% |
1,087 |
4.64% |
| 美里町 |
4,067 |
75.36% |
1,161 |
21.51% |
169 |
3.13% |
| 玉東町 |
1,480 |
52.45% |
1,295 |
45.89% |
47 |
1.67% |
| 和水町 |
3,954 |
74.11% |
1,261 |
23.64% |
120 |
2.25% |
| 南関町 |
3,116 |
70.02% |
1,203 |
27.03% |
131 |
2.94% |
| 長洲町 |
4,786 |
66.23% |
2,117 |
29.30% |
323 |
4.47% |
| 大津町 |
8,761 |
70.64% |
3,091 |
24.92% |
551 |
4.44% |
| 菊陽町 |
9,410 |
67.14% |
3,901 |
27.83% |
705 |
5.03% |
| 南小国町 |
1,563 |
69.65% |
606 |
27.01% |
75 |
3.34% |
| 小国町 |
2,810 |
65.52% |
1,307 |
30.47% |
172 |
4.01% |
| 産山村 |
655 |
70.20% |
251 |
26.90% |
27 |
2.89% |
| 高森町 |
2,406 |
71.84% |
832 |
24.84% |
111 |
3.31% |
| 南阿蘇村 |
4,200 |
70.15% |
1,522 |
25.42% |
265 |
4.43% |
| 西原村 |
2,199 |
71.89% |
745 |
24.35% |
115 |
3.76% |
| 御船町 |
5,886 |
72.28% |
1,993 |
24.48% |
264 |
3.24% |
| 嘉島町 |
2,932 |
73.56% |
910 |
22.83% |
144 |
3.61% |
| 益城町 |
10,457 |
70.92% |
3,650 |
24.76% |
637 |
4.32% |
| 甲佐町 |
3,567 |
70.04% |
1,315 |
25.82% |
211 |
4.14% |
| 山都町 |
7,268 |
77.98% |
1,821 |
19.54% |
231 |
2.48% |
| 氷川町 |
4,217 |
73.89% |
1,322 |
23.16% |
168 |
2.94% |
| 芦北町 |
7,319 |
72.83% |
2,259 |
22.48% |
472 |
4.70% |
| 津奈木町 |
2,118 |
76.32% |
531 |
19.14% |
126 |
4.54% |
| 錦町 |
3,627 |
68.51% |
1,492 |
28.18% |
175 |
3.31% |
| あさぎり町 |
5,823 |
68.38% |
2,440 |
28.65% |
253 |
2.97% |
| 多良木町 |
3,064 |
59.16% |
1,874 |
36.18% |
241 |
4.65% |
| 湯前町 |
1,579 |
71.19% |
567 |
25.56% |
72 |
3.25% |
| 水上村 |
1,068 |
71.87% |
378 |
25.44% |
40 |
2.69% |
| 相良村 |
1,606 |
66.83% |
725 |
30.17% |
72 |
3.00% |
| 五木村 |
460 |
61.17% |
276 |
36.70% |
16 |
2.13% |
| 山江村 |
1,347 |
66.35% |
633 |
31.18% |
50 |
2.46% |
| 球磨村 |
1,670 |
68.44% |
719 |
29.47% |
51 |
2.09% |
| 苓北町 |
2,421 |
59.90% |
1,314 |
32.51% |
307 |
7.60% |
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