1 8 2 6 ▁or ▁before ▁March ▁ 4 , ▁ 1 8 2 7 ; ▁ordered ▁by ▁election ▁date . ▁ ▁R aces ▁leading ▁to ▁the ▁ 2 0 th ▁Congress ▁▁ ▁In ▁these ▁general ▁elections , ▁the ▁winner ▁was ▁se ated ▁on ▁March ▁ 4 , ▁ 1 8 2 7 ; ▁ordered ▁by ▁state . ▁ ▁All ▁of ▁the ▁elections ▁involved ▁the ▁Class ▁ 1 ▁seats . ▁ ▁E lections ▁during ▁the ▁ 2 0 th ▁Congress ▁ ▁In ▁this ▁election , ▁the ▁winner ▁was ▁se ated ▁in ▁ 1 8 2 7 ▁after ▁the ▁new ▁Congress ▁began ▁on ▁March ▁ 4 . ▁ ▁Alabama ▁( Special ) ▁ ▁Connecticut ▁ ▁Del aware ▁▁ ▁Del aware ▁had ▁two ▁elections : ▁A ▁special ▁for ▁the ▁class ▁ 2 ▁seat ▁and ▁a ▁general ▁election ▁for ▁the ▁class ▁ 1 ▁seat . ▁ ▁The ▁elections ▁f li pped ▁both ▁seats ▁from ▁Anti - Jack son ian ▁to ▁Jackson ian . ▁ ▁Del aware ▁( Special ) ▁▁ ▁Anti - Jack son ian ▁sen ator ▁Nicholas ▁Van ▁Dy ke ▁died ▁May ▁ 2 1 , ▁ 1 8 2 6 ▁and ▁Anti - Jack son ian ▁Daniel ▁Rod ney ▁was ▁appointed ▁to ▁continue ▁the ▁class ▁ 2 ▁term ▁( ending ▁March ▁ 3 , ▁ 1 8 2 9 ) ▁until ▁a ▁special ▁election . ▁ ▁Jackson ian ▁Henry ▁M . ▁R id g ely ▁was ▁elected ▁January ▁ 1 2 , ▁ 1 8 2 7 . ▁ ▁Del aware ▁( General )