Dealignment refers to:

A$.$ granting less power to the party chairman and more to the national committee.

B$.$ a lower level of candidate attachment to his or her political party.

C$.$ moving from single$-$party dominance to two$-$party competition.

D$.$ replacing the dominance of one party with the eventual dominance of the other.

E$.$ a lower level of voter attachment to a particular political party.