popular
clear, strong
broad
new
legal, legislative, regulatory
constitutional
congressional, federal, government, state
electoral
It is undemocratic to govern an area without an electoral mandate.

political
divine

have
give sb, issue
seek
The party sought a mandate to reform the constitution.

get, obtain, receive, win
extend

in your mandate
He failed in his mandate.

under a/the mandate
They ruled the country under a United Nations mandate.

with a/the mandate
The party was elected with a mandate to reduce the size of government.

without a mandate
They accused him of acting without a mandate.

mandate for
She has received a clear mandate for educational reform.

mandate from
a mandate from the United Nations to govern the territory

an extension of a mandate, a renewal of a mandate

Mandate is used with these nouns as the subject:
congress, law, regulation