Irish election count begins as tied exit poll means it's too close to call

Ireland's Taoiseach, or Prime Minister, Leo Varadkar casts his vote at a polling station in Castleknock, Dublin, on Saturday.

(CNN)Ireland began its official vote count Sunday as the nation waits for a clearer picture of its future government, following an exit poll that suggested the general election ended in a three-way dead heat.

The exit poll, released as voting ended at 10 p.m. (5 p.m. ET) on Saturday, showed Taoiseach, or Prime Minister, Leo Varadkar's Fine Gael party with 22.4% of first preference votes. Sinn Féin won 22.3% while Fianna Fáil gained 22.2%.
Sinn Féin's leader Mary Lou McDonald has helped transform the party to attract younger voters.
With a margin of error of 1.3%, the poll meant the election was too close to call Saturday, but indicated a hung parliament was almost inevitable and that long political negotiations were ahead.
The once-marginal Sinn Féin -- which was the political wing of the IRA during its drive to force Britain out of Northern Ireland -- appears to have successfully reshaped its image. According to the exit poll by Ipsos MRBI for The Irish Times, RTÉ and others, the party has become a popular option for young Irish voters frustrated with issues such as housing unaffordability.
Sinn Féin -- led by Mary Lou McDonald, who took over from longtime leader Gerry Adams two years ago -- was never in the running to command the Irish Dáil, or parliament, outright and form a government. It only fielded 42 candidates, short of the 80-seat threshold. There are 160 seats in the Dáil. The speaker is automatically re-elected and not considered a lawmaker with voting rights.
Sinn Féin could technically form a coalition with smaller parties, but its success Saturday is more likely to translate into a seat at the table in coalition negotiations.
Fine Gael has said it would not accept Sinn Féin in any coalition. Fianna Fáil, led by Micheál Martin, has said the same, although some analysts have speculated it is not impossible for both nationalist parties to work together.
Varadkar's Fine Gael party currently leads a minority government propped up in a confidence-and-supply arrangement with Fianna Fáil.