CHICAGO (AP) – Gov. Bruce Rauner has signed a measure expanding an Illinois law that lets 17-year-olds vote in a primary if they’re 18 by the general election.

The new plan now allows 17-year-olds to participate in more primaries for local offices, like for mayor, if they’re 18 by the general contest. They’ll also be able to circulate petitions for candidates and ballot questions and help others register to vote.

The law takes effect immediately. Lawmakers approved it with overwhelming support.

Illinois approved a law in 2013 allowing 17-year-olds to vote in a primary if they turned 18 by the general election. It took effect in the 2014 election cycle.

Democratic state Sen. Terry Link was a bill sponsor. He’s said the plan helps open doors for teens.