IPA: /ɪˌlɛk.təˈbɪl.ɪ.ti/
KK: /ɪˈlɛktəˌbɪlɪti/
The ability of a candidate to win an election or be chosen by voters.
The candidate's electability was a major factor in the party's decision to support him.
Electability is formed from "elect" (from Latin "electus", meaning chosen) and "-ability" (meaning the quality of being able to). The term refers to the quality of being able to be chosen or elected.
Think of someone being 'chosen' ('elect') and the '-ability' indicating the quality of that choice. This helps you remember that 'electability' means the quality of being able to be elected.