| Final through canvass Tuesday, June 12, 2018 |
All | % of Reg | Dem | % of Reg | Rep | % of Reg | Libt |
| Total Ballots Request (Does not included 23 mailed ballots surrendered unvoted at polls) |
5199 | 5.81% | 4927 | 12.07% | 258 | 1.46% | 14 |
| All | % of Requests | Dem | % of Requests | Rep | % of Requests | Libt | |
| Ballots Returned (mail office and satellite) | 5133 | 98.7% | 4870 | 98.8% | 250 | 96.9% | 13 |
| All | % of Reg | Dem | % of Reg | Rep | % of Reg | Libt | |
| Mail (Domestic) | 714 | 0.80% | 666 | 1.54% | 40 | 0.23% | 8 |
| Military/Overseas Mail | 14 | 0.02% | 11 | 0.03% | 3 | 0.02% | 0 |
| Mail Total | 728 | 0.81% | 677 | 1.56% | 43 | 0.24% | 8 |
| All | % of Reg | Dem | % of Reg | Rep | % of Reg | Libt | |
| Auditor's Office | 3275 | 3.65% | 311 | 7.17% | 158 | 0.89% | 6 |
| Satellite | 1150 | 1.28% | 1103 | 2.54% | 47 | 0.26% | 0 |
| In-person Total | 4425 | 4.93% | 4214 | 9.71% | 205 | 1.15% | 6 |
| Nursing Home | 46 | 0.05% | 36 | 0.08% | 10 | 0.06% | 0 |
| All | % of Requests | Dem | % of Requests | Rep | % of Requests | Libt | |
| Mailed Ballots Returned | 662 | 90.9% | 620 | 91.6% | 35 | 81.4% | 7 |
| Mailed Ballots not Returned | 66 | 9.1% | 57 | 8.4% | 8 | 18.6% | 1 |
| Requests by Precinct | All | % of Reg | Dem | % of Reg | Rep | % of Reg | Libt |
| Big Grove | 38 | 2.7% | 36 | 7.8% | 2 | 0.4 | 0 |
| Cedar | 22 | 5.2% | 21 | 11.7% | 1 | 0.9% | 0 |
| Clear Creek-Tiffin | 53 | 2.5% | 46 | 6.1% | 5 | 0.9% | 2 |
| Coralville 1 | 90 | 5.1% | 85 | 10.5% | 4 | 1.8% | 1 |
| Coralville 2 | 137 | 7.7% | 125 | 15.6% | 12 | 2.7% | 0 |
| Coralville 3 | 63 | 5.7% | 57 | 12.6% | 6 | 2.5% | 0 |
| Coralville 4 | 82 | 5.6% | 77 | 10.3% | 5 | 2.5% | 0 |
| Coralville 5 | 88 | 6.1% | 85 | 10.9% | 3 | 1.4% | 0 |
| Coralville 6 | 190 | 8.9% | 181 | 19.6% | 8 | 1.5% | 1 |
| Coralville 7 | 149 | 8.3% | 137 | 15.8% | 12 | 3.5% | 0 |
| Coralville Total | 799 | 6.8% | 747 | 13.2% | 50 | 2.1% | 2 |
| Fremont-Lincoln | 19 | 1.5% | 18 | 4.0% | 1 | 0.3% | 0 |
| Graham | 19 | 5.1% | 19 | 10.6% | 0 | 0.0% | 0 |
| Hardin | 5 | 1.3% | 4 | 2.5% | 1 | 0.9% | 0 |
| Hills | 9 | 1.7% | 7 | 3.0% | 2 | 1.8% | 0 |
| Iowa City 01 | 203 | 9.2% | 199 | 15.8% | 4 | 1.0% | 0 |
| Iowa City 02 | 287 | 15.8% | 265 | 26.7% | 20 | 5.8% | 2 |
| Iowa City 03 | 21 | 1.1% | 20 | 2.9% | 1 | 0.2% | 0 |
| Iowa City 04 | 144 | 8.1% | 136 | 13.7% | 7 | 2.4% | 1 |
| Iowa City 05 | 28 | 1.2% | 26 | 2.8% | 2 | 0.4% | 0 |
| Iowa City 06 | 148 | 6.8% | 143 | 11.8% | 5 | 1.4% | 0 |
| Iowa City 07 | 146 | 8.9% | 143 | 18.1% | 3 | 1.0% | 0 |
| Iowa City 08 | 204 | 10.3% | 196 | 20.5% | 7 | 1.6% | 1 |
| Iowa City 09 | 163 | 9.7% | 159 | 17.9% | 4 | 1.5% | 0 |
| Iowa City 10 | 55 | 3.3% | 48 | 6.1% | 7 | 2.6% | 0 |
| Iowa City 11 | 49 | 2.7% | 47 | 6.1% | 2 | 0.6% | 0 |
| Iowa City 12 | 107 | 5.7% | 101 | 10.4% | 5 | 2.1% | 1 |
| Iowa City 13 | 83 | 5.7% | 80 | 11.4% | 3 | 1.4% | 0 |
| Iowa City 14 | 118 | 7.0% | 111 | 10.9% | 7 | 4.7% | 0 |
| Iowa City 15 | 66 | 5.0% | 65 | 9.8% | 1 | 0.5% | 0 |
| Iowa City 16 | 181 | 9.5% | 170 | 14.7% | 10 | 4.7% | 1 |
| Iowa City 17 | 240 | 11.3% | 236 | 17.2% | 4 | 1.9% | 0 |
| Iowa City 18 | 245 | 13.0% | 239 | 18.9% | 6 | 3.7% | 0 |
| Iowa City 19 | 21 | 1.1% | 21 | 3.0% | 0 | 0.0% | 0 |
| Iowa City 20 | 66 | 3.5% | 62 | 7.1% | 4 | 1.3% | 0 |
| Iowa City 21 | 119 | 7.1% | 116 | 11.8% | 2 | 1.1% | 1 |
| Iowa City 22 | 131 | 7.5% | 128 | 14.6% | 3 | 1.0% | 0 |
| Iowa City 23 | 254 | 11.4% | 247 | 18.5% | 6 | 1.6% | 1 |
| Iowa City 24 | 170 | 6.9% | 159 | 13.8% | 11 | 2.2% | 0 |
| Total for Iowa City Precincts | 3249 | 6.7% | 3117 | 12.2% | 124 | 1.5% | 8 |
| Jefferson East | 24 | 1.3% | 18 | 3.6% | 6 | 1.0% | 0 |
| Jefferson West-Monroe | 18 | 1.1% | 18 | 3.3% | 0 | 0.0% | 0 |
| Liberty-Pleasant Valley | 32 | 6.8% | 29 | 13.2% | 2 | 1.7% | 1 |
| Newport | 172 | 9.7% | 164 | 20.8% | 8 | 1.6% | 0 |
| North Liberty 01 | 29 | 1.7% | 25 | 11.4% | 4 | 3.4% | 0 |
| North Liberty 02 | 30 | 1.8% | 25 | 3.8% | 4 | 1.0% | 1 |
| North Liberty 03 | 52 | 2.3% | 48 | 6.2% | 4 | 0.7% | 0 |
| North Liberty 04 | 40 | 2.6% | 38 | 5.9% | 2 | 0.8% | 0 |
| North Liberty 05 | 35 | 2.4% | 34 | 6.1% | 1 | 0.3% | 0 |
| North Liberty 06 | 72 | 2.6% | 61 | 6.5% | 11 | 1.5% | 0 |
| Total for North Liberty Precincts | 258 | 2.4% | 231 | 5.6% | 26 | 1.0% | 1 |
| Oxford | 17 | 1.6% | 15 | 3.5% | 2 | 0.8% | 0 |
| Penn-East Lucas N | 241 | 11.3% | 236 | 22.8% | 5 | 0.9% | 0 |
| Scott | 41 | 3.4% | 39 | 7.4% | 2 | 0.7% | 0 |
| Sharon | 16 | 3.6% | 12 | 9.4% | 4 | 2.1% | 0 |
| Solon | 37 | 2.2% | 33 | 5.5% | 4 | 0.9% | 0 |
| Union | 35 | 7.0% | 30 | 12.2% | 5 | 3.9% | 0 |
| University Heights | 65 | 8.6% | 61 | 15.0% | 4 | 2.9% | 0 |
| Washington | 4 | 0.7% | 2 | 1.5% | 2 | 0.8% | 0 |
| West Lucas | 26 | 3.3% | 24 | 6.9% | 2 | 1.4% | 0 |
| Total Requests | All | % of Reg | Dem | % of Reg | Rep | % of Reg | Libt |
| 5,199 | 5.8% | 4,927 | 12.1% | 258 | 1.5% | 14 | |
| Returned by Precinct | All | % of Reg | Dem | % of Reg | Rep | % of Reg | Libt |
| Big Grove | 37 | 2.7% | 35 | 7.6% | 2 | 0.4% | 0 |
| Cedar | 22 | 5.2% | 21 | 11.7% | 1 | 0.9% | 0 |
| Clear Creek-Tiffin | 52 | 2.4% | 45 | 6.0% | 5 | 0.9% | 2 |
| Coralville 1 | 88 | 5.0% | 83 | 10.2% | 4 | 1.8% | 1 |
| Coralville 2 | 134 | 7.5% | 123 | 15.4% | 11 | 2.4% | 0 |
| Coralville 3 | 63 | 5.7% | 57 | 12.6% | 6 | 2.5% | 0 |
| Coralville 4 | 80 | 5.5% | 75 | 10.0% | 5 | 2.5% | 0 |
| Coralville 5 | 88 | 6.1% | 85 | 10.09% | 3 | 1.4% | 0 |
| Coralville 6 | 187 | 8.7% | 178 | 19.3% | 8 | 1.5% | 1 |
| Coralville 7 | 148 | 8.3% | 136 | 15.7% | 12 | 3.5% | 0 |
| Coralville Total | 788 | 6.7% | 737 | 13.0% | 49 | 2.0% | 2 |
| Fremont-Lincoln | 18 | 1.5% | 17 | 3.8% | 1 | 0.3% | 0 |
| Graham | 18 | 4.8% | 18 | 10.1% | 0 | 0.0% | 0 |
| Hardin | 5 | 1.3% | 4 | 2.5% | 1 | 0.9% | 0 |
| Hills | 8 | 1.5% | 6 | 2.6% | 2 | 1.8% | 0 |
| Iowa City 01 | 202 | 9.2% | 198 | 15.7% | 4 | 1.0% | 0 |
| Iowa City 02 | 284 | 15.6% | 263 | 16.5% | 19 | 5.5% | 2 |
| Iowa City 03 | 21 | 1.1% | 20 | 2.9% | 1 | 0.2% | 0 |
| Iowa City 04 | 142 | 8.0% | 134 | 13.5% | 7 | 2.4% | 1 |
| Iowa City 05 | 28 | 1.2% | 26 | 2.8% | 2 | 0.4% | 0 |
| Iowa City 06 | 148 | 6.8% | 143 | 11.8% | 5 | 1.4% | 0 |
| Iowa City 07 | 145 | 8.8% | 142 | 18.0% | 3 | 1.0% | 0 |
| Iowa City 08 | 203 | 10.2% | 195 | 20.4% | 7 | 1.6% | 1 |
| Iowa City 09 | 162 | 9.6% | 158 | 17.8% | 4 | 1.5% | 0 |
| Iowa City 10 | 54 | 3.2% | 48 | 6.1% | 6 | 2.2% | 0 |
| Iowa City 11 | 49 | 2.7% | 47 | 6.1% | 2 | 0.6% | 0 |
| Iowa City 12 | 06 | 5.6% | 100 | 10.3% | 5 | 2.1% | 1 |
| Iowa City 13 | 83 | 5.7% | 80 | 11.4% | 3 | 1.4% | 0 |
| Iowa City 14 | 118 | 7.0% | 111 | 10.9% | 7 | 4.7% | 0 |
| Iowa City 15 | 65 | 5.0% | 64 | 9.7% | 1 | 0.5% | 0 |
| Iowa City 16 | 181 | 9.5% | 170 | 14.7% | 10 | 4.7% | 1 |
| Iowa City 17 | 236 | 11.1% | 232 | 16.9% | 4 | 1.9% | 0 |
| Iowa City 18 | 243 | 12.9% | 237 | 18.8% | 6 | 3.7% | 0 |
| Iowa City 19 | 21 | 1.1% | 21 | 3.0% | 0 | 0.0% | 0 |
| Iowa City 20 | 63 | 3.4% | 59 | 6.7% | 4 | 1.3% | 0 |
| Iowa City 21 | 117 | 7.0% | 114 | 11.6% | 2 | 1.1% | 1 |
| Iowa City 22 | 130 | 7.4% | 128 | 14.6% | 2 | 0.7% | 0 |
| Iowa City 23 | 254 | 11.4% | 247 | 18.5% | 6 | 1.6% | 1 |
| Iowa City 24 | 168 | 6.8% | 158 | 13.7% | 10 | 2.0% | 0 |
| Total for Iowa City Precincts | 3223 | 6.7% | 3095 | 12.1% | 120 | 1.5% | 8 |
| Jefferson East | 21 | 1.2% | 16 | 3.2% | 5 | 0.9% | 0 |
| Jefferson West-Monroe | 18 | 1.1% | 18 | 3.3% | 0 | 0.0% | 0 |
| Liberty-Pleasant Valley | 31 | 6.6% | 29 | 13.2% | 2 | 1.7% | 0 |
| Newport | 171 | 9.6% | 163 | 20.6% | 8 | 1.6% | 0 |
| North Liberty 01 | 27 | 1.6% | 23 | 10.5% | 4 | 3.4% | 0 |
| North Liberty 02 | 26 | 1.6% | 21 | 3.2% | 4 | 1.0% | 1 |
| North Liberty 03 | 50 | 2.3% | 47 | 6.1% | 3 | 0.6% | 0 |
| North Liberty 04 | 37 | 2.4% | 35 | 5.5% | 2 | 0.8% | 0 |
| North Liberty 05 | 35 | 2.4% | 34 | 6.1% | 1 | 0.3% | 0 |
| North Liberty 06 | 70 | 2.5% | 59 | 6.3% | 11 | 1.5% | 0 |
| Total for North Liberty Precinct | 245 | 2.3% | 219 | 5.3% | 25 | 1.0% | 1 |
| Oxford | 17 | 1.6% | 15 | 3.5% | 2 | 0.8% | 0 |
| Penn-East Lucas N | 241 | 11.3% | 236 | 22.8% | 5 | 0.9% | 0 |
| Scott | 41 | 3.4% | 39 | 7.4% | 2 | 0.7% | 0 |
| Sharon | 16 | 3.6% | 12 | 9.4% | 4 | 2.1% | 0 |
| Solon | 33 | 1.9% | 30 | 5.0% | 3 | 0.7% | 0 |
| Union | 34 | 6.8% | 29 | 11.8% | 5 | 3.9% | 0 |
| University Heights | 64 | 8.5% | 60 | 14.7% | 4 | 2.9% | 0 |
| Washington | 4 | 0.7% | 2 | 1.5% | 2 | 0.8% | 0 |
| West Lucas | 26 | 3.3% | 24 | 6.9% | 2 | 1.4% | 0 |
| Total Returned | All | % of Reg | Dem | % of Reg | Rep | % of Reg | Libt |
| 5,133 | 5.7% | 4,870 | 11.9% | 250 | 1.4% | 13 | |
| Requests by Legislative District | All | % of Reg | Dem | % of Reg | Rep | % of Reg | Libt |
| House District 73 (Kaufmann) |
329 | 4.8% | 312 | 11.4% | 17 | 0.9% | 0 |
| House District 74 (Jacoby) |
1554 | 8.2% | 1482 | 16.3% | 69 | 1.8% | 3 |
| House District 37 (Open) |
1883 | 7.3% | 1794 | 15.2% | 86 | 1.5% | 3 |
| House 77/Senate 39 (Nielsen/Kinney) | 505 | 2.3% | 445 | 5.5% | 56 | 1.0% | 4 |
| House District 85 (Lensing) |
1557 | 7.0% | 1500 | 12.9% | 53 | 1.5% | 4 |
| House District 86 (Mascher) | 1254 | 6.6% | 1188 | 12.2% | 63 | 2.1% | 3 |
| House District 43 (Belkcom) |
2811 | 6.82% | 1688 | 12.59% | 116 | 1.77% | 7 |
| Returned by Legislative District | All | % of Reg | Dem | % of Reg | Rep | % of Reg | Libt |
| House District 73 (Kaufmann) |
322 | 4.7% | 306 | 11.2% | 16 | 0.9% | 0 |
| House District 74 (Jacoby) |
1540 | 8.1% | 1469 | 16.2% | 68 | 1.8% | 3 |
| Senate District 37 (Open) |
1862 | 7.2% | 1775 | 15.0% | 84 | 1.5% | 3 |
| House 77/Senate 39 (Nielsen/Kinney) | 485 | 2.2% | 428 | 5.3% | 54 | 0.9% | 3 |
| House District 85 (Lensing) |
1542 | 6.9% | 1487 | 12.8% | 51 | 1.4% | 4 |
| House District 86 (Mascher) |
1244 | 6.5% | 1180 | 12.2% | 61 | 2.1% | 3 |
| House District 43 (Bolkcom) |
2786 | 6.8% | 2667 | 12.5% | 112 | 1.7% | 7 |
| Individual Satellite Sites | All | Dem | Reg | Libt | |||
| 5/7 ICPL | 109 | 105 | 4 | 0 | |||
| 5/29 CVPL | 68 | 65 | 3 | 0 | |||
| 5/30 UIHC | 117 | 114 | 3 | 0 | |||
| 5/30 CVPL | 59 | 55 | 4 | 0 | |||
| 5/31 UIHC | 141 | 131 | 10 | 0 | |||
| 5/31 CVPL | 66 | 64 | 2 | 0 | |||
| 6/1 CVPL | 88 | 84 | 4 | 0 | |||
| 6/1 ICPL | 148 | 144 | 4 | 0 | |||
| 6/2 CVPL | 140 | 130 | 10 | 0 | |||
| 6/2 ICPL | 213 | 208 | 5 | 0 | |||
| Party Changes | |||||||
| Democrat remained Democrat | 4464 | ||||||
| Republican to Democrat | 113 | ||||||
| No party to Democrat | 360 | ||||||
| Libertarian to Democrat | 3 | ||||||
| Green to Democrat | 10 | ||||||
| Republican remained Republican | 228 | ||||||
| Democrat to Republican | 9 | ||||||
| No Party to Republican | 20 | ||||||
| Libertarian to Republican | 1 | ||||||
| Green to Republican | 0 | ||||||
| Libertarian remained Libertarian | 5 | ||||||
| Democrat to Libertarian | 5 | ||||||
| Republican to Libertarian | 1 | ||||||
| No Party to Libertarian | 2 | ||||||
| Green to Libertarian | 1 |