I have a 96 mercury tracer and the key is broken off in the ignition how can i remove it because i have a extra key

If you are very lucky you can coat the endpiece of key you have with superglue and then attach it to the bit left in the lock,(give the job to a woman as they are better at it than us males,really)if you dont fancy that try eyebrow tweezers,the long pointy ones,(this job i gave to my wife and she had it out in no time.....)otherwise its a full lock, out job.

The one time I had this problem I had to remove the ignition then dis assemble it to get the key out. Be very careful when you do this. If you lose a spring or pin in the tumbler your keys won't work.