Information about the voting intentions of Northern Ireland voters in the upcoming EU referendum is scarce. Most major UK polling companies do not include a sample of Northern Ireland voters. The polls below, however, reveal that since August 2015, there has been a slight drop in support among Northern Ireland voters for remaining in the EU, although a majority favour staying in. The number of undecideds has reduced considerably over time and shifted in favour of leaving the EU.
Belfast Telegraph BIG100 Online Poll, February 22nd, 2016
Remain: 55.07% Leave: 29.44% Undecided: 14.93%
Belfast Telegraph BIG60 Online Poll, November 6th, 2015
Remain: 56.48% Leave: 28.34% Undecided: 15.18%
Behaviour and Attitudes (RTE and BBC Northern Ireland), October, 16th, 2015
Remain: 55% Leave: 13% Undecided: 32%
Danske Bank Poll, August 5th, 2015
Remain: 58% Leave: 16% Undecided: 26%