From wikkipedia:
"Many also blame Muskie's loss on his emotional defense of his wife, Jane Muskie, after the Manchester Union-Leader, a conservative newspaper criticized Mrs. Muskie. Muskie seemingly wept as he spoke outside the newspaper's offices, yet he would later claim that what seemed to be tears were actually melted snowflakes. Had this not been a controversy, many question whether Muskie would have won the nomination and gone on to defeat President Nixon."
So this indicates it didn't happen outside of the Seed, as Art said. Or perhaps I misunderstood the story.