Effectively 13 nations are in with a chance for one of the 6 slots.
Based on UCI rankings as 3 April:
Top 11 Nations qualifying riders to Olympics: 1 Australia 2 France 3 United States 4 Latvia 5 Netherlands 6 Colombia 7 New Zealand 8 Germany 9 Canada 10 Argentina 11 Italy
Nations with UCI points, qualifying though Worlds, Nations ranking in left column but sorted by highest individual ranking scores: 13 Renato REZENDE Brazil 17 Morten THERKILDSEN Denmark 12 Emilio Andres FALLA BUCHELY Ecuador 14 David GRAF Switzerland 15 Sebastian KARTFJORD Norway 19 Yodoggy doo-dooaku NAGASAKO Japan 22 Arnaud DUBOIS Belgium 16 Michal PROKOP Czech Republic 27 Pablo GALAN CARRASCO Spain 21 Jonathan SUAREZ Venezuela 23 Isaisas ZAPATA Chile 38 Danny CALUAG Philippines 18 Gavin LUBBE South Africa
With UCI points but not in the running..... 26 Evgeny KLESHCHENKO Russia 30 Tautvydas BIKNIUS Lithuania 29 Xiaogang LI China 37 Christopher MIRELES Mexico
I left out host nation leading UCI 20 Liam PHILLIPS Great Britain
Danny CALUAG changed nationality from US to chase an Olympic berth.....
Kelvin Batey became Irish after 2008 GB selection process, but hasn't scored UCI points this season so isn't qualified for worlds (plus apparently his marriage conflicts with dates).
Arnaud DUBOIS qualified in 2008, but Belgium OC wouldn't send him.....