What can make a listing contract voidable?

A listing contract can be voidable if one party lacks the legal capacity to enter into the contract at the time it is signed. In this case, if the seller is heavily under the influence of alcohol when signing the listing contract, they may not be in a sound state of mind, which can affect their ability to understand the implications of the agreement. When someone is intoxicated, they may be unable to make informed decisions or consent knowingly. As a result, the contract might be deemed voidable, meaning the intoxicated party has the option to nullify it.

The other scenarios mentioned do not confer a similar status. Changing one's mind is a natural part of negotiations and doesn’t void the contract unless there are other legal grounds for that. The failure of the broker to market the property constitutes a breach of duty but does not make the contract voidable. Receiving another offer is a common occurrence in real estate transactions and doesn't impact the validity of the existing contract unless the seller chooses to cancel or negotiate differently, which again does not equate to voidability.