- 11,790 total votes taken.
- 43.9% share of the total vote
- +8.0% change in share of the votes
- 8,122 total votes taken.
- 30.3% share of the total vote
- -0.1% change in share of the votes
- 3,521 total votes taken.
- 13.1% share of the total vote
- -3.8% change in share of the votes
- 2,277 total votes taken.
- 8.5% share of the total vote
- +5.9% change in share of the votes
- 718 total votes taken.
- 2.7% share of the total vote
- -11.4% change in share of the votes
- 409 total votes taken.
- 1.5% share of the total vote
- +1.5% change in share of the votes
Change compared with 2010
Latest updates Arfon
Leanne Wood hails Plaid MPstweet
Plaid 'up around the country'standard
Plaid Cymru's Hywel Williams, who retained the Arfon seat, said he had a higher percentage of the vote than he had expected.
He also said he understood the party's percentage was going up around the country.
"We're seeing this as a stepping stone to the assembly elections as well, so it's good," he added.
Increased majority for Plaid in Arfontweet
Cardiff University politics lecturer Lleu Williams tweets: "Increased majority for Hywel Williams and PC in Arfon, after a big tumble with Labour for the seat"
Plaid Cymru hold
Plaid Cymru hold Arfon
The turnout in this seat - Labour's 45th target nationally - was 66.51%. That is an increase of 3.2% on 2010.
A swing of 2.8% is required for Labour's Alun Pugh to take the seat from Plaid's Hywel Williams.
Plaid hoping 'lucky braces' will make a difference in Arfonstandard
BBC Wales' Dafydd Evans says Plaid Cymru's Hywel Williams has arrived at the count wearing his "lucky braces". He says he's "hopeful" - but he does face a strong challenge from Labour's Alun Pugh - a former Welsh government minister
Situated in north-west Wales, Arfon is based around the historic town of Caernarfon - site of the investiture of the Prince of Wales in 1969. The constituency is also home to Bangor University.
Tourism and the public sector are major employers, and there is also a thriving media sector based around Bangor.
The high student population means the seat has a different demographic profile to other constituencies on the north Wales coast - 16.5% of the population are aged 65 or over, compared to 25% in neighbouring Aberconwy. The old Caernarfon seat had been a Plaid Cymru stronghold since it was won by Dafydd Wigley in the February 1974 election. Boundary changes for 2010 meant the new seat of Arfon was nominally Labour, but Plaid Cymru's Hywel Williams won with 36% of the vote, ahead of Labour on 30.4%, the Conservatives on 16.9%, the Lib Dems on 14.1% and UKIP on 2.6%.