I'm just wondering if Sinn Fein having a stated boycott, can enter parliament in a vote of no confidence. It seems to be otherwise consistent with their message. Perpetual no-confidence.

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    Just to be clear, who are you assuming would stop them? Or are you actually asking whether they'd have to take the oath of allegiance before voting?
    – origimbo
    Commented Jun 9, 2017 at 5:40
  • @Carpetsmoker Yes, the question is tagged UK and parliament, and Sinn Fein only have a boycott in that context. The Ireland tag should probably be removed to reduce confusion.
    – JBentley
    Commented Jun 9, 2017 at 8:55

1 Answer 1


In order to participate in any parliamentary business (including a confidence vote), Sinn Fein MPs would need to swear an oath to the Crown, or take a solemn affirmation:

Until the oath or affirmation is taken, an MP may not receive a salary, take their seat, speak in debates or vote.

Sinn Fein MPs consistently refuse to do this, so cannot take part in any business of the House of Commons.

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