I just looked through the party platforms, but a fat lot of good that did. I realized at least that the "Greens and Farmers" are not only nationalists, but also anti-science obscurantists. The rest of the parties are either nationalists, or their members have been in politics forever, which isn't much joy either.
By the way, this is roughly how I pictured it all, just like in this article
In the end, I'm voting for Harmony Centre. Not because it's a super option, but because Cilevičs is there, whom I quite like (unfortunately, he's only on the Riga list), and I know very little about the other parties.
ZaPCHEL isn't bad either, but I'm not really all that bothered about super-radical improvements to the lives of Russian speakers and all that. Especially since ZaPCHEL, even if they make it in, will still get very few seats anyway. Tatjana Ždanoka is a nice lady, but at this point you have to choose. Plus, ZaPCHEL's rhetoric just rubs me the wrong way, it's way too sloganeering and aimed at Russian-speaking proletarians.