The following table shows all Legislative Assembly electorates to be contested at the 2018 Victorian state election, ordered according to two-party-preferred margin.
| Labor Seats | Coalition Seats | ||
| Seat | Margin | Seat | Margin |
| Frankston | ALP 0.5% | Ripon | LIB 0.8% |
| Carrum | ALP 0.7% | Morwell | NAT 1.8% |
| Bentleigh | ALP 0.8% | South Barwon | LIB 2.9% |
| Richmond | ALP 1.9% vs GRN | Burwood | LIB 3.2% |
| Mordialloc | ALP 2.1% | Eildon | LIB 3.8% |
| Brunswick | ALP 2.2% vs GRN | Bass | LIB 4.6% |
| Cranbourne | ALP 2.3% | Bayswater | LIB 4.6% |
| Eltham | ALP 2.7% | Mount Waverley | LIB 4.6% |
| Albert Park | ALP 3.0% | Forest Hill | LIB 4.8% |
| Ivanhoe | ALP 3.4% | Caulfield | LIB 4.9% |
| Yan Yean | ALP 3.7% | Ringwood | LIB 5.1% |
| Macedon | ALP 3.8% | Box Hill | LIB 5.7% |
| Sunbury | ALP 4.3% | Sandringham | LIB 7.3% |
| Mulgrave | ALP 4.5% | Hastings | LIB 7.6% |
| Narre Warren North | ALP 4.6% | Nepean | LIB 7.6% |
| Bellarine | ALP 4.8% | Ferntree Gully | LIB 7.8% |
| Bendigo East | ALP 5.0% | Mildura | NAT 8.0% vs IND |
| Monbulk | ALP 5.0% | Rowville | LIB 8.4% |
| Narre Warren South | ALP 5.5% | Hawthorn | LIB 8.6% |
| Wendouree | ALP 5.8% | Gembrook | LIB 9.0% |
| Geelong | ALP 6.0% | Croydon | LIB 9.3% |
| Buninyong | ALP 6.4% | Evelyn | LIB 9.6% |
| Niddrie | ALP 7.7% | Benambra | LIB 9.7% |
| Oakleigh | ALP 8.2% | Brighton | LIB 9.8% |
| Essendon | ALP 8.7% | Bulleen | LIB 10.6% |
| Melton | ALP 11.2% | Kew | LIB 10.6% |
| Keysborough | ALP 11.9% | Polwarth | LIB 10.6% |
| Bendigo West | ALP 12.2% | South-West Coast | LIB 11.0% |
| Bundoora | ALP 12.2% | Narracan | LIB 11.3% |
| Altona | ALP 12.6% | Warrandyte | LIB 11.6% |
| Dandenong | ALP 12.9% | Mornington | LIB 12.6% |
| Footscray | ALP 14.5% | Euroa | NAT 14.5% |
| Tarneit | ALP 14.6% | Gippsland South | NAT 15.7% |
| Werribee | ALP 15.7% | Malvern | LIB 16.3% |
| Clarinda | ALP 15.8% | Ovens Valley | NAT 16.6% |
| Sydenham | ALP 16.3% | Gippsland East | NAT 17.9% |
| Williamstown | ALP 16.5% | Lowan | NAT 21.3% |
| Pascoe Vale | ALP 16.8% | Murray Plains | NAT 22.4% |
| Lara | ALP 17.1% | ||
| St Albans | ALP 17.5% | ||
| Yuroke | ALP 18.5% | ||
| Mill Park | ALP 19.9% | Crossbench Seats | |
| Kororoit | ALP 20.0% | Prahran | GRN 0.4% vs LIB |
| Preston | ALP 24.7% | Melbourne | GRN 2.4% vs ALP |
| Broadmeadows | ALP 27.8% | Shepparton | IND 2.6% vs NAT |
| Thomastown | ALP 28.4% | Northcote | GRN 5.6% vs ALP |