The act of a government borrowing without voter approval. This may or may not occur after the voters have refused to authorize a bond issue. The practice is controversial as it implies a lack of transparency in government actions and forces taxpayer money to be used to repay debt that voters did not want.
Borrowing by a public authority without voter approval. Public authorities often use backdoor borrowing when voters reject proposed debt issues. Taxpayer funds are used to repay debt accumulated in backdoor borrowing.