An initiative is an issue placed on the ballot to become law if a majority of the voters approve it.
27 states, mostly in the South and West, allow initiatives or referenda, and most of those states allow both. All states allow some form of the legislative referendum process, whereby the legislature can place an issue on the ballot.
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- That is the number required in 2008 to amend the constitution. Fewer signatures are required merely to enact a law.