"maintain a membership" is a correct and commonly used phrase in written English.
It means to continue being a member of a particular group or organization. You can use this phrase when talking about organizations, clubs, or groups that require membership, and the actions or efforts needed to stay as a member. Example: The club requires all members to attend regular meetings and maintain a membership by paying annual dues.
With 750 members and a $950,000 annual budget, both evidence of solidity, the congregation maintains a membership in the American Baptist Churches.
This includes the following types of conduct: promoting, showing support for, or maintaining a membership with an incompatible organisation, and showing support for the closure of offshore processing centres by engaging in activities such as public rallies or demonstrations".
The campaign released the names of 10 private social and sports clubs in which Mr. Bloomberg maintains a membership, but it also acknowledged that beginning in April, he sent letters of resignation to four others.
In recent weeks, these voters said, they have received frequent mailings from New Jersey Right to Life, the state's largest anti-abortion group, which maintains a membership list of 150,000 families.
Marble Collegiate, which since 1854 has been housed in a grand structure with soaring stained glass windows on Fifth Avenue at 29th Street (the church is named for the marble blocks used in its construction), has maintained a membership of more than 2,000 people since Dr. Caliandro took over from Dr. Peale.
Maintaining a membership of about 500 international scientists, ISES members have experience in several disciplines, including exposure assessment; chemistry; biochemistry; risk assessment; biostatistics; physiology; toxicology; epidemiology; ecology; environmental fate, transport, and transformation; and environmental engineering.
The McCain family tree has a long heritage of American military service, with ancestors fighting as soldiers in the Indian Wars, American Revolutionary War (due to which McCain maintains a membership with the Sons of the American Revolution), War of 1812, for the Confederate States of America in the American Civil War, and in World War I.
To develop and maintain a strong membership base at different levels of donorship.
