Crowdskout will append FEC (Federal Election Commission) donation data to each profile that has the following fields: full name + zip code. These donations will be added only to the Advocacy tab of a profile. This is what the donations will look like in the Advocacy tab:
You can search for these donations by clicking into Audience > Advocacy > Outside Contribution.
If there's a specific national organization that reports to the FEC (i.e. presidential campaigns, U.S. Senate campaigns, congressional campaigns, etc) you can search directly for that organization by typing in the organization's name in the text field box. You can refine your segment further by what political party someone donated to.