The story
From tipping point + state.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: In a list of states of the United States ordered by decreasing margins of victory for the winning candidate in a presidential election, the state whose votes cause the winning candidate to meet or exceed the threshold for victory when tallying the number of electoral college votes from each state. Full definition →
From tipping point + state.
Etymology from Wiktionary, CC BY-SA 4.0.