Here are links to some of the data files I’ve used in my research. The Race Data sets I coded with my colleague David Searle from UCSD, and I ask you please cite us if you plan to use them.
Adam Bonica’s CF-Scores - Candidate ideal point estimates using campaign finance data dating back to 1980
The Cooperative Congressional Elections Study - Internet election survey with a nationally representative sample
2010Race.dta - file with the racial makeup of all major party US House candidates for the 2010 midterm election
2012Race.dta - file with the racial makeup of all major party US House candidates for the 2012 general election
2010-2014PrimaryRace.csv - file with the racial makeup of all primary candidates for US House from 2010-2014.