Donovan represented Falls Church, Fairfax County and surrounding areas in the state senate for three terms, 1952-1964, during the period of
Massive Resistance as well as the growth of the northern Virginia suburbs of Washington, D.C. The district was initially numbered the 29th, and included Prince William County and Alexandria from Donovan's original election in 1951 until the 1955 election. Donovan's core Falls Church and Fairfax area was reformulated for that election as the 28th District when growing Northern Virginia received some additional representation. During his legislative service, Donovan also served as Chairman of the Interstate Potomac River Basin Commission. After the 1960 census documented additional growth in northern Virginia which the Virginia legislature's redistricting barely addressed, in April 1962 Donovan joined with fellow Fairfax County politician
John C. Webb, as well as
C. Harrison Mann and
Kathryn H. Stone of neighboring
Arlington County. All four broke with the
Byrd Organization and challenged the gross under-representation of Northern Virginia (for example some rural districts had one delegate per 20,000 residents but Fairfax County's two delegates each represented 143,000 people). A three-judge federal panel decided in their favor on November 28, 1962, but the state appealed. The United States Supreme Court eventually decided in their favor on June 15, 1964, in
Davis v. Mann. The 1962 redistricting (which was still in effect in the 1963 election) moved the 29th senatorial district to cover Prince William County, rather than Fairfax County, and renumbered the core of the old district covering Fairfax County and Falls Church as the 27th District. Like fellow state Senator,
Armistead Boothe, Donovan declined to seek re-election.
Omer L. Hirst and
Robert C. Fitzgerald were elected as Fairfax's dual senators, defeating John K. Lally and William G. Downey in the primary. Donovan never again held elective office, but continued his legal practice, as well as again became a statewide representative of the
Lions Club in that national (and international) organization. ==Death and memorials==