In the Scottish Parliament election, there are 73 first-past-the-post constituencies and 56 proportional representation top-up seats chosen from eight regional lists, electing a total of 129 MSPs.
Regional MSPs are only awarded seats once all constituency contest have been decided, meaning the full make-up of Holyrood could take until Saturday evening to be certified.
Here is when each constituency is expected to have its result declared.
A majority of FPTP seats, 46 in all, are expected to count during the day on Friday with results due from about lunchtime, peaking in the evening.
•Airdrie & Shotts (where there is an estimated declaration time of noon)
•Angus North & Mearns (estimated time of 3.30pm)
•Argyll & Bute (5pm)
•Banffshire & Buchan Coast
•Clackmannanshire & Dunblane (6pm)
•Clydebank & Milngavie
•Coatbridge & Chryston (noon)
•Dundee City West
•Roxburgh & Berwickshire (6.30pm)
•Fife North East (4pm)
•Glasgow Maryhill & Springburn
•Greenock & Inverclyde
•Larkhall & Stonehouse
•Inverness & Nairn (7pm)
•Kilmarnock & Irvine Valley (5pm)
•Midlothian North & Musselburgh (5.30pm)
•Motherwell & Wishaw
•Na h-Eileanan an Iar
•Renfrewshire North & West
•Strathkelvin & Bearsden
The remaining 27 constituencies are understood to be planning to count in the day on Saturday with results due from about lunchtime.
•Aberdeen South & Kincardine North
•Caithness, Sutherland & Ross
•Cumnock & Doon Valley (5pm)
•Cumbernauld & Kilsyth
•Dundee City East
•Edinburgh Northern & Leith
•Fife Mid & Glenrothes (1pm)
•Galloway & Dumfries West
•Tweeddale & Lauderdale (6.30pm)
•Perthshire South & Kinross-shire
•Renfrewshire South (3pm)
•Lochaber & Badenoch
•Uddingston & Bellshill
Results for proportional representation seats in the eight regions are expected on Saturday night, with Scotland Mid & Fife possibly around 6pm, and Scotland West at 7pm.