Definitions:

1. A candidate or contestant generally agreed upn as the presumptive winner. NOUN
   • She's very popular and good with numbers, so I expect she'll be a shoo-in for treasurer.
2. An easy victory. NOUN
   • With overwhelming public support, the film was a shoo-in for box office success.
3. Refers to a person or thing that is certain to succeed, win, or be chosen, often with little or no competition. NOUN
   • With his strong resume and connections, he's a shoo-in for the promotion.

Synonyms:

• blowout
• favorite
• front-runner
• guaranteed winner
• lock
• no-brainer
• sure thing