"At any given moment, the “window” includes a range of policies considered to be politically acceptable in the current climate of public opinion, which a politician can recommend without being considered too “extreme” or outside the mainstream to gain or keep public office. Overton arranged the spectrum on a vertical axis of “more free” and “less free” in regard to government intervention. When the window moves or expands, ideas can accordingly become more or less politically acceptable."
"At any given moment, the “window” includes a range of policies considered to be politically acceptable in the current climate of public opinion, which a politician can recommend without being considered too “extreme” or outside the mainstream to gain or keep public office. Overton arranged the spectrum on a vertical axis of “more free” and “less free” in regard to government intervention. When the window moves or expands, ideas can accordingly become more or less politically acceptable."