David Costello

Platner's voters are reeling as Maine Democratic Party races to choose his replacement - NPR

Here Are the Maine Democrats Who Might Replace Graham Platner - The New York Times

Platner seeks the Democratic Senate nomination to set up critical Maine race with Collins - PBS

Maine Democrats: Don’t forget David Costello in Senate primary | Steve Collins - Portland Press Herald - Maine Sunday Telegram

A 3rd Democrat joins Janet Mills and Graham Platner in Maine’s US Senate primary - Bangor Daily News

Things are getting interesting for Fianna Fáil in Bertie's old stomping ground - The Journal

Maine Democrats running to replace Platner as Senate nominee scramble to woo his voters - Orlando Sentinel

Costello’s exit nearly solidifies Jackson’s presumptive Senate nominee status - Maine Morning Star

Maine Democrat David Costello makes his second bid for the US Senate - WMTW

Democrat David Costello says he’s a viable alternative - spectrumlocalnews.com

Maine Democrat David Costello pursues long-shot bid for the U.S. Senate - newscentermaine.com

Your Vote 2026 profile: David Costello, Democrat for Senate - Maine Public