This video is part of a series originally produced by U.S. Embassy London and adapted for use by the U.S. Department of State's Bureau of International Information Programs. It can be viewed online at: http://youtu.be/ePOux3mwQIw

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[Text: Caucus, Primary, National Convention, General Election, Electoral College]

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[Text: Every Four Years Americans Vote For President]

00:00:14.467,00:00:19.967
[Text: most select their candidates by Primary]

00:00:19.967,00:00:24.967
[Text: Primaries work like normal elections]

00:00:24.967,00:00:34.467
[Text: millions of Americans take part]

00:00:34.467,00:00:37.933
[Text: In 2008 36 million Democrats]

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[Text: and]

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[Text: 21 million Republicans]

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[Text: voted in their primaries]

00:00:54.300,00:01:02.233
[Text: The Democrats hold 37 primaries.]

00:01:02.233,00:01:20.000
[Text: The Republicans hold 39 primaries.]

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[Text: Each state party sets the date of its primary...]

00:01:29.900,00:01:35.900
[Text: … but New Hampshire always gets there first]

00:01:35.900,00:01:39.500
[Text: All the candidates hope to build momentum for their campaign.]

00:01:39.500,00:01:49.467
[Text: It's all about the domino effect]

00:01:49.467,00:01:59.233
[Text: In 2008 the Democrats held 16 primaries on the same day]

00:01:59.233,00:02:06.167
[Text: It was called Tsunami Tuesday]

00:02:06.167,00:02:12.467
[Text: This time it's Super Tuesday]

00:02:12.467,00:02:14.867
[Text: On 6 March 2012 Republicans will hold]

00:02:14.867,00:02:16.267
[Text: 7 state primaries]

00:02:16.267,00:02:19.900
[Text: on the same day]

00:02:19.900,00:02:23.800
[Text: The primary season lasts until June.]

00:02:23.800,00:02:29.600
[Text: Elected delegates then travel to their national conventions]

00:02:29.600,00:02:36.600
[Text: We don't know who will win, but this is what we do know:]

00:02:36.600,00:02:49.233
[Text: People pick delegates. Delegates pick candidates. Candidates become presidents. Presidents lead America.]

00:02:49.233,00:03:01.500
[Text: People lead America.]

00:03:01.500,00:03:08.433
[Text: Caucus, Primary, National Convention, General Election, Electoral College]

00:03:08.433,00:03:10.567
[Text: The Race to The White House]

00:03:10.567,00:03:35.833
[Text: Select a stage]