Knife-edge

The game was on a knife-edge.

[…]meanwhile, Biloxi and Vincennes are both in the process of going down and being abandoned, whilst Miami is right on the knife-edge of being recoverable, with three destroyers clustering around offering pumping and additional damage-control crews to try and keep the light cruiser afloat.

Boris Johnson's future on a knife edge after No 10 party apology [title]

Polling stations have opened in a knife-edge election in Finland, with polls suggesting the three leading parties are running neck-and-neck and prime minister Sanna Marin may face an uphill battle to stay in power.