The Blackwood, Newbridge & Crosskeys edition covers the towns of Blackwood and Newbridge in the County Borough of Caerphilly (historically, they were part of Monmouthshire) plus other towns in the Sirhowy Valley as far up as Hollybush and as far down as Crosskeys, including the smaller towns of Ynysddu, Abercarn, Pontllanfraith, Pengarn, Oakdale and Crumlin.
Campaign was founded in 1982, or possibly earlier. It’s published by Newsquest (Wales), whose headquarters in Newport now also host the series’s editorial offices after they moved from Caerphilly. The Campaign series has a single common website; the link below is to the news page for the Blackwood area.
It comes out on Wednesdays. An e-edition’s available, but apparently only of the Caerphilly edition.