The 1970 Lombard regional election took place on 7–8 June 1970. It was the first-ever regional election.
Election was held under proportional representation with provincial constituencies where the largest remainder method with a Droop quota was used. To ensure more proportionality, remained votes and seats were transferred at regional level and calculated at-large.
The Christian Democracy was by far the largest party and christian-democrat Piero Bassetti was able to form a strong center-left government with the support of the PSI, the PSU and the PRI. Bassetti was replaced by Cesare Golfari in 1974.
| Parties | Votes | % | Seats | ||
|---|---|---|---|---|---|
| Christian Democracy | 2,138,141 | 40.90 | 36 | ||
| Italian Communist Party | 1,210,068 | 23.14 | 19 | ||
| Italian Socialist Party | 648,696 | 12.41 | 9 | ||
| Unitary Socialist Party | 376,436 | 7.20 | 5 | ||
| Italian Liberal Party | 310,324 | 5.94 | 4 | ||
| Italian Social Movement | 195,791 | 3.64 | 3 | ||
| Italian Socialist Party of Proletarian Unity | 188,585 | 3.61 | 2 | ||
| Italian Republican Party | 125,767 | 2.41 | 2 | ||
| Italian Democratic Party of Monarchist Unity | 31,119 | 0.60 | – | ||
| Autonomists' Union of Italy | 3,389 | 0.06 | – | ||
| Total parties | 5,228,316 | 100.00 | 80 | ||
| Invalid/blank votes | 225,720 | 4.14 | |||
| Registered voters | 5,453,931 | 95.51 | |||
| Source: Ministry of the Interior – Results | |||||
| Province | DC | PCI | PSI | PSU | PLI | MSI | PSIUP | PRI | Total | |
|---|---|---|---|---|---|---|---|---|---|---|
| Milan | 12 | 9 | 4 | 3 | 3 | 2 | 1 | 1 | 35 | |
| Brescia | 5 | 2 | 1 | 1 | - | 1 | 1 | - | 11 | |
| Bergamo | 5 | 1 | 1 | 1 | - | - | - | - | 8 | |
| Como | 4 | 1 | 1 | - | 1 | - | - | - | 7 | |
| Varese | 3 | 1 | 1 | - | - | - | - | 1 | 6 | |
| Mantua | 2 | 2 | 1 | - | - | - | - | - | 5 | |
| Pavia | 2 | 2 | - | - | - | - | - | - | 4 | |
| Cremona | 2 | 1 | - | - | - | - | - | - | 3 | |
| Sondrio | 1 | - | - | - | - | - | - | - | 1 | |
| Total | 36 | 19 | 9 | 5 | 4 | 3 | 2 | 2 | 80 |