"The Big List": 2010 State House And Senate Races
Jeremy Pelzer (formerly of PolitickerCO and 5280) has a complete rundown of announced, projected, and speculative candidates for Colorado House and Senate in 2010 (to be continuously updated):
2010 House Candidates
2010 Senate Candidates
Jeremy's blog Mile High Politics is sure to be a key source for political news for 2010, so be sure to bookmark it and check back frequently.