Definition of dealign in US English:

dealign

verb

[no object]
  • (of a voter) withdraw allegiance to a political party.

    • ‘Weakly identifying partisans are also growing in proportion as an outcome of a dealigning electorate.’
    • ‘Razzell has a feel for the modern, largely dealigned voter.’
    • ‘In the short run, some dealigned voters are ‘floating’ between the mainstream parties, while others have drifted into social isolation.’

Pronunciation

dealign

/ˌdēəˈlīn/