Three of the four states to consider tightening their gun-control laws pass new initiatives on Tuesday. Gun-control was on the ballot in Washington, Maine, Nevada, and California.

In California, which already has some of the nation’s most stringent gun laws, voters approved a measure that will outlaw possession of large-capacity ammunition magazines, require permits to buy ammunition, and extend California’s program that allows authorities to seize firearms from owners who bought guns legally but are no longer allowed to own them. The gun-control measure, pushed by Lt. Gov. Gavin Newsom, was approved by 62 percent of voters as of Wednesday morning. The full text of the measure follows: https://www.oag.ca.gov/system/files/initiatives/pdfs/15-0098%20(Firearms)_0.pdf.

Washington approved a ballot measure that will allow judges to issue orders temporarily seizing guns from individuals who are deemed a threat (https://sos.wa.gov/_assets/elections/initiatives/FinalText_1016.pdf).

In Maine and Nevada, Everytown for Gun Safety, the gun-control group founded by billionaire former New York City Mayor Michael Bloomberg, spent millions promoting ballot measures that would require background checks on nearly all gun sales and transfers. The measure passed in Nevada (http://nvsos.gov/Modules/ShowDocument.aspx?documentid=4434) but was rejected in Maine (http://www.maine.gov/sos/news/2016/orderofballotquestions.html).

State measures such as these may become increasingly a focus of gun control advocates as it is unlikely that any new measures restricting gun ownership would succeed at the national level with the new Republican-controlled Congress and White House.