David Speirs looking to overcome drugs sentence and return to South Australian parliament

David Speirs wearing a white business shirt and black pants sitting on a blue park bench.

David Speirs is attempting a political comeback in the upcoming South Australian election. (ABC News: Lincoln Rothall)

In short:

David Speirs is trying to re-enter state parliament after a drugs conviction last year.

If he were elected some analysts say his eligibility could be legally challenged.

What's next?

The SA election is being held this weekend.