Русская версияBy Justin Webb
BBC North America editor
US Democratic presidential hopeful Barack Obama is expected to reveal his vice-presidential running mate shortly.
He has told journalists he has made his decision, which will be revealed by text message to the party's senators and supporters, and journalists.
Democrats gather for their party convention in Denver on Monday.
Mr Obama and his mate are likely to make their first main campaign appearance together in Springfield, Illinois, on Saturday.
It is possible that they might keep the name of the vice-presidential selection a secret until just before the appearance but, realistically, that seems unlikely.
The expectation is that during the course of Friday a text message will be received by those who have signed up for it, revealing the name.
Does it matter?
The conventional wisdom is that it does not: vice-presidential candidates do not swing elections.
But Mr Obama's choice is interesting because it will reveal a little more about the style of the man and how willing he is to be adventurous.
Most commentators believe he will play it safe, opting for a governor, perhaps Tim Kaine of Virginia, or a political veteran like Senator Joe Biden.
Some Democrats are hoping he has a surprise up his sleeve - a Hillary Clinton or an Al Gore.
(BBC)
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