MANCHESTER, N.H. >> Presidential hopefuls and New Hampshire's top elected officials are coming together to talk about drug addiction and how to fight it.

Heroin and opioid abuse has become a top issue for local and national politicians in New Hampshire, where officials estimate roughly 400 people died from overdoses in 2015.

Candidates slated to attend include Govs. John Kasich of Ohio and Chris Christie of New Jersey, former Gov. Jeb Bush of Florida and former technology executive Carly Fiorina. Bush's campaign says he plans to roll out a new drug control policy and talk about his family's struggle with addiction.

New Hampshire's two U.S. senators, Kelly Ayotte and Jeanne Shaheen, will also speak, as will Gov. Maggie Hassan.