I have earned a Bachelor's degree in history and have just started on my Master's. During my undergrad work I earned 21 credit hrs in political science. I don't like having these credits just there and having no degree to show for these particular classes. Is there any way to quickly turn these 21 credit hrs in political science into either an Associates or Bachelors degree? Mainly wanting it purely for personal reasons.
TESC will allow you to earn a BS as few as an additional 30 units that have not been applied to a previous degree. You must still meet all degree requirements however. Looks like you are well on your way to earning the TESC BA in Pol Sci: Thomas Edison State College: Political Science
While there are a handful of online PoliSci undergrad programs out there, all of them would require too much residency other than the "Big Three". Ian is correct, the TESC program is a perfect fit for what you are looking to do.
Troy University Troy University offers both the associate's and the bachelor's degree in political science online.
There are literally a plethora of online options for an undergrad polisci, my spreadsheet has around 20 schools and that's not comprehensive at all. But all of them require a significant residency (and most have a language requirement), as opposed to the TESC program, which might only require a capstone.
Then it is unlikely you can use them towards another degree (if I understand you that they were applied to your bachelors in history).