Polls begin closing at
2300 UCT Tuesday, 4 November 2008 (6p EST, 5p CST, 4p MST, 3p PST, 2p AK, 1p AL, 1p HI).
All polls are closed by
0600 UCT Wednesday 5 November 2008 (1a EST, 12a CST, 11p MST, 10 PST, 9p AK, 8p AL, 8p HI).
 

This chart reflects the poll closing times used by the networks and other media outlets on Election Night. There is an "unenforced pledge" to not project a winner in a state until that state's polls have closed (which, to the media, means "most of the state's polls have closed").

Below the chart is an outline of potential difficulties which may occur where a state spans time zones. (Poll closing times are extended for voters still in line when the hour of poll closing has arrived.)
 

The table below counts the electoral votes at LATEST poll closing time for states that span multiple time zones.The EARLIEST poll closing time is shown with blanks in the electoral vote column. (Note that the media has historically called states when MOST rather than ALL of the polls have closed.)

This is the earliest at which a candidate could be projected to have been elected the next President of the United States, assuming a candidate has been projected to win the necessary 270 electoral votes to be elected.

Notes

Polling places in states that span multiple time zones will close either synchronously or asynchronously.

• (Note ^*S) With synchronized closing, all the polls close at the same GMT/UTC time. For states with multiple time zones-- when polls close in the advanced local time zone, they will close one hour earlier in the lagging local time zone.
• (Note ^*A) With asynchronous closing, the polls close at different GMT/UTC times in different parts of the state. Media outlets might decide to declare a winner before all the polls have closed.

Alaska General Election: Polls close asynchronously at 8:00p AKST (0500 UTC) / 8:00p ALST (0600 UTC). Alaska Time covers most of the state except for the Aleutian Islands west of Umnak Island (approximately half of Aleutian Islands). The media considers Alaska's polls to close at 8 PM Alaska Time and, thus, considers the State "callable" after that hour.

Florida General Election: Polls close asynchronously at 7:00p EST (0000 UTC) / 7:00p CST (0100 UTC). Relatively small portions of this state are in CST and so the vast majority of the polls are closed by the time indicated EST.

Idaho General Election: Polls close asynchronously at 8:00p MST (0300 UTC) / 8:00p PST (0400 UTC). Local option allows polling places to open at 7 AM. A sizable part of IDAHO is in PST but, as the MST section is the much more populated portion of the state, the networks consider that "most of the polls in IDAHO" are closed by 8 PM MST.

Indiana General Election: Polls close asynchronously at 6:00p EST (2300 UTC) / 6:00p CST (0000 UTC). Although much of this state is in CST, the majority of the polls are closed by the time indicated EST when the networks feel they can project.

Kansas General Election: Polls close asynchronously at 8:00p MST (0300 UTC) / 8:00p CST (0200 UTC). Most polls in the State close at either 7 pm or 8 pm local time in the Central Time Zone by local option; the remaining polls in the Mountain Time Zone close at either 6 pm or 7 pm local time by local option. The time noted as the "official" poll closing time is the statutory poll closing time and is that at which the networks generally consider the polls in the State to have closed.

Kentucky General Election: Polls close asynchronously at 6:00p EST (2300 UTC) / 6:00p CST (0000 UTC). Poll closing time could be rather problematic in KENTUCKY. A large chunk of the state is in CST [but the networks consider that "most of the polls have closed" in KENTUCKY by 6 PM EST and so, if they can, project at the same time they project INDIANA]. CST voters in KENTUCKY may note the networks' willingness/eagerness to project a winner as early as 6 PM EST.

Maine General Election: Polls close synchronously at 8:00p EST (0100 UTC). Voting places open between 6:00a EST and 10:00a EST depending on the size of the town.

Massachusetts General Election: Polls close synchronously at 8:00p EST (0100 UTC). By local option, municipalities may open their polls as early as 5:45 a.m.

Michigan General Election: Polls close asynchronously at 8:00p EST (0100 UTC) / 8:00p CST (0200 UTC). Relatively small portions of this state are in CST and so the vast majority of the polls are closed by the time indicated EST, when the networks feel they can project.

Minnesota General Election: Polls close synchronously at 8:00p CST (0200 UTC). Voting begins at 10:00 AM in some townships.

Nebraska General Election: Polls close synchronously at 8:00p CST (0200 UTC) / 7:00p MST (0200 UTC). The polls open and close at the same GMT/UTC time, that is, polls open and close at a particular local time in the advanced time zone and open and close one hour earlier local time in the lagging time zone.

New Hampshire General Election: Polls close synchronously at 8:00p EST (0100 UTC). Polls must open by 11 AM however most open between 7 AM and 8 AM. NEW HAMPSHIRE permits its 13 cities to keep their polls open until 8 PM EDT by local option- however, as there ARE only 13 cities among New Hampshire's 234 County subdivisions [the 221 "non-cities", of course, being the proverbial New England Town(ship)], the fact is that the vast majority of NH's polls have closed by 7 PM EST and the networks have no problem considering this hour as the earliest hour of potential projection.

New York General Election: Polls close synchronously at 9:00p EST (0200 UTC). Polls are open from 6:00a to 9:00p in NYC and the counties of Nassau, Suffolk, Westchester, Rockland, Orange, Putnam and Erie. All other counties, polls are open from 12:00 noon - 9:00p.

North Carolina General Election: Polls close synchronously at 8:30p EST (0130 UTC). NORTH CAROLINA allows its County Boards of Elections to decide whether to keep polls open until 8:30 p.m. EST but, outside of metropolitan areas, this local option is not often utilized and so 7:30 p.m. EST is the networks' earliest time of projection beacuse the vast majority of that state's polls will have closed by that hour.

North Dakota General Election: Polls close asynchronously at 9:00p CST (0300 UTC) / 9:00p MST (0400 UTC). Voting places open between 7:00a to 12:00n and remain open until 7:00p to 9:00p depending on the size of the town. The western half of the state is in MST but that is, of course, the more sparsely populated part of the state, so it is not as problematic to the networks as might be otherwise suggested by simple geography.

Oregon General Election / Special Election Labor Commissioner: Polls close asynchronously at 8:00p MST (0300 UTC) / 8:00p PST (0400 UTC). OREGON is the reverse of the norm because the by far largest portion of the state is in the lagging time zone and the networks have no choice but to not consider the OREGON polls closed until 8 PM PST.

Rhode Island General Election: Polls close synchronously at 9:00p EST (0200 UTC). Polls open 7a to 9a by location.

South Dakota General Election: Polls close asynchronously at 7:00p CST (0100 UTC) / 7:00p MST (0200 UTC).

Tennessee General Election: Polls close synchronously at 8:00p EST (0100 UTC) / 7:00p CST (0100 UTC). The polls close at the same GMT/UTC time, that is, polls close at a particular local time in the advanced time zone and close one hour earlier local time in the lagging time zone.

Texas General Election: Polls close asynchronously at 7:00p CST (0100 UTC) / 7:00p MST (0200 UTC). Only the area around El Paso is in MST, so the vast majority of polls have closed in TX by 7 PM CST.

Vermont General Election: Polls close synchronously at 7:00p EST (0000 UTC). Polls may open as early as 5:00a and no later than 10:00a as set by the Board of Civil Authority.

Time zone abbreviations

UCT: Universal Coordinated Time, Greenwich England
AST: Atlantic Standard Time, UCT - 4 hours
EST: Eastern Standard Time, UCT - 5 hours
EDT: Eastern Daylight Time, UCT - 4 hours
CST: Central Standard Time, UCT - 6 hours
CDT: Central Daylight Time, UCT - 5 hours
MST: Mountain Standard Time, UCT - 7 hours
MDT: Mountain Daylight Time, UCT - 6 hours
PST: Pacific Standard Time, UCT - 8 hours
PDT: Pacific Daylight Time, UCT - 7 hours
AKST: Alaska Standard Time, UCT - 9 hours
AKDT: Alaska Daylight Time, UCT - 8 hours
ALST: Aleution Standard Time, UCT - 10 hours
ALDT: Aleution Daylight Time, UCT - 9 hours
HIST: Hawaii Time, UCT - 10 hours
MPST: Northern Marianas Time, UCT + 10 hours
GUST: Guam Time, UCT + 10 hours
VIST: Virgin Islands Time, UCT - 4 hours
ASST: American Samoa Time, UCT - 11 hours
m: midnight
a: AM
p: PM