DemocratNot in office · last served 1990Last on a ballot: Nov 1986

Donald B. Robertson

Donald B. Robertson ran in 9 elections between 1970 and 1986, winning 9. Served in the Maryland House of Delegates (HD-MONTGOMERYCOUNTY 1 and District 18).

Last office: Maryland House of Delegates, District 18

Elections: 9; 1970–1986
Won: 9; generals, primaries and specials

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Career

Offices held, and every time Robertson was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.

197219761980198419881992199620002004200820122016202020242028Maryland House of Delegates, HD-MONTGOMERYCOUNTY 1 Maryland House of Delegates, District 18Out of office

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Every race Robertson has run

Margin: how far Robertson finished ahead of (+) or behind (−) the runner-up.

Year	Office	Stage	Result	Opponents	Share	Margin
1986	Maryland House of Delegates, District 18	General	Won	Patricia R. Sher (D), C. Lawrence Wiser (D), Howard Jenkins III (R)	23.1%	R+0.4
1986	Maryland House of Delegates, District 18	Primary	Won	Patricia R. Sher (D), C. Lawrence Wiser (D), Michael Brodt Gormley (D)	29.9%	−3.3
1982	Maryland House of Delegates, District 18	General	Won	Helen L. Koss (D), Patricia R. Sher (D)	33.4%	D+0.1
1982	Maryland House of Delegates, District 18	Primary	Won	Patricia R. Sher (D), Helen L. Koss (D), John A. Hurson (D)	25.5%	−1.3
1978	Maryland House of Delegates, District 18	General	Won	David L. Scull (D), Patricia R. Sher (D), Daniel J. Boyle (R)	20.3%	R+1.4
1978	Maryland House of Delegates, District 18	Primary	Won	David L. Scull (D), Patricia R. Sher (D), Charles F. Kirkley (D)	18.7%	−8.4
1974	Maryland House of Delegates, District 18	General	Won	Charles A. Docter (D), David L. Scull (D), Thomas L. Craven (R)	22%	R+0.2
1974	Maryland House of Delegates, District 18	Primary	Won	Charles A. Docter (D), David L. Scull (D), Charles F. Kirkley (D)	23.3%	−3.9
1970	Maryland House of Delegates, HD-MONTGOMERYCOUNTY 1	General	Won	S. Ruffin Maddox Jr. (D), Devin J. Doolan (D), Woodrow M. Allen (D)	7.3%	R+0.3

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Seats Robertson has held

Maryland House of Delegates, District 18 · 1975–1990
Maryland House of Delegates, HD-MONTGOMERYCOUNTY 1 · 1971–1974

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Who Robertson has run against

Patricia R. Sher (D) · 1986 election, won
Helen L. Koss (D) · 1982 election, won
David L. Scull (D) · 1978 election, won
Charles A. Docter (D) · 1974 election, won
S. Ruffin Maddox Jr. (D) · 1970 election, won

Source: 99chambers results archive (MEDSL, Klarner, state election offices)