Canada Without Poverty hasn't done extensive research into these issues. However, we witnessed a lot of people with lived experience, noting that they have had issues accessing identification. This has been particularly stressful in accessing pandemic relief programs.
I think just being able to increase awareness about how to access government IDs that allow them to vote.... Perhaps mail reminders out to communities in poverty, with detailed instructions in languages that are accessible and relevant to those populations to outline the instructions on how to attain these IDs, and doing this as ahead of time as possible. Sometimes it can take six weeks to two months to produce these IDs and deliver them to people.
Further, as you mentioned, let these communities in poverty now access these IDs at cost since renewing identification can be costly. Even if it's only $40, sometimes this is a big chunk of someone's monthly income.