2018 Maine Senate election should not be confused with 2018 United States Senate election in Maine.
| Election Name: | 2018 Maine Senate election |
| Country: | Maine |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2016 Maine Senate election |
| Previous Year: | 2016 |
| Next Election: | 2020 Maine Senate election |
| Next Year: | 2020 |
| Seats For Election: | All 35 seats in the Maine Senate |
| Majority Seats: | 18 |
| Election Date: | November 6, 2018 |
| Leader1: | Troy Jackson |
| Party1: | Democratic Party (United States) |
| Leaders Seat1: | 1st |
| Last Election1: | 17 |
| Seats Before1: | 17 |
| Seats1: | 21 |
| Seat Change1: | 4 |
| Popular Vote1: | 347,752 |
| Percentage1: | 55.9% |
| Swing1: | 8.3% |
| Leader2: | Michael Thibodeau (term-limited) |
| Party2: | Republican Party (United States) |
| Leaders Seat2: | 11th |
| Last Election2: | 18 |
| Seats Before2: | 18 |
| Seats2: | 14 |
| Seat Change2: | 4 |
| Popular Vote2: | 268,735 |
| Percentage2: | 43.2% |
| Swing2: | 6.0% |
| Map Size: | 300px |
| Senate President | |
| Before Party: | Republican |
| After Election: | Troy Jackson |
| After Party: | Democratic |
The 2018 Maine State Senate elections took place as part of the biennial United States elections. Maine voters elected state senators in all 35 of the state senate's districts. State senators serve two-year terms in the State Senate.
A primary election on June 12, 2018, determined which candidates appear on the November 6 general election ballot. Primary election results can be obtained from the Maine Secretary of State's website.[1]
Following the 2016 state Senate elections, Republicans maintained effective control of the House with 18 members.
The Maine Secretary of State provides both a detailed description of each Senate seat as well as maps for each district, including this statewide Senate map showing all 35 Senate districts.[2]
After the 2018 elections, Republicans lost control of the chamber. The Democrats needed to net one Senate seat. In the election, the Democrats gained four seats, claiming the majority.
Seats where the margin of victory was under 10%:
| align=center | District 1 • District 2 • District 3 • District 4 • District 5 • District 6 • District 7 • District 8 • District 9 • District 10 • District 11 • District 12 • District 13 • District 14 • District 15 • District 16 • District 17 • District 18 • District 19 • District 20 • District 21 • District 22 • District 23 • District 24 • District 25 • District 26 • District 27 • District 28 • District 29 • District 30 • District 31 • District 32 • District 33 • District 34 • District 35 |