NEW YORK (AP) — Former New York Mayor Michael Bloomberg plans to spend $50 million this year on a new group that will mix campaign contributions with field operations aimed at pulling 1 million gun-control supporters to the polls, he announced Wednesday, adding a new dimension to his long-running fight for tighter firearms regulation. The new organization, Everytown for Gun Safety, plans to mobilize voters to back candidates and ballot measures supporting such causes as enhancing background checks for gun buyers, according to a news release. Bloomberg's efforts sometimes spurred criticism that the New Yorker was butting into other people's politics, and gun-rights groups have portrayed him as overreaching and out of touch with the views of millions of gun owners. In a major setback for gun-control advocates, President Barack Obama's plan for broader background checks and proposals for a ban on military-style assault rifles and limits on ammunition capacity failed last year in Congress.