People could be allowed to SLOTXO vote in supermarkets or schools in some parts of Wales at next year's council elections.
New "flexible voting" proposals could see polling take place over multiple days or a weekend before an election, in an effort to boost turnout.
The Welsh government has asked if councils would like to pilot the ideas.
But a body of electoral officials said there was not a "huge" amount of time to implement the proposals.
The Welsh Conservatives said some might see the proposals as an effort to "gerrymander" the elections, while Plaid Cymru welcomed the plans.
Turnout in Wales was 42% at the last council elections in 2017.
Next year's elections will be the first for local government in Wales where 16 and 17-year-olds can take part.
Officials are considering letting voters cast ballots in any polling station in their local authority area.
It could mean people could vote in person somewhere more convenient to them, instead of the polling station allocated according to where
they live.
The Welsh government is looking at whether voting in places like supermarkets and leisure centres could be allowed, or in schools and colleges.
Early voting - as seen in the US elections last November - could also form part of the pilots.