I feel your frustration. I spent my entire undergraduate career preparing for an Economics PhD and now I suddenly decided I'll apply to Poli Sci programs as well. There is a wealth of information available online for prospective Econ applicants, but an absolute dearth when it comes to Poli Sci. The most I can say is that being fluent in a foreign language is definitely a plus, especially if you're interested in comparative politics with a regional focus where that language is spoken. Your GPA is a bit on the lower side, but that can be somewhat forgiven if you have taken some hard classes, particularly math/stats/economics. I think a large chunk of Poli Sci admissions is based on SOP, LORs & writing sample - things which we are not privy to here - and as such it will be hard to suitably advise you. It might also explain why it is so hard to get admissions data since such a large part of the admissions process cannot be quantified. Its a sharp contrast to Economics, where your math gpa & GRE quant score determines whether or not your LORs will be read or if they should toss out your application prematurely.
