Game that goes down to the wire

• Sudden-death game, say
• Game that goes into overtime, e.g
• Close contest
• Tense situation
• Very close game that could cause fans to ruin their manicures: Hyph
• Rail bent badly across one in situation marked by tension
• Line a bit misjudged by Republican - cause of tension?
• Very close game, e.g.

Wiktionary Word definitions in Wiktionary
n. (alternative spelling of nail-biter English)