There are translations entered in VoteWiki SecurePoll for all fields - and Meta correctly displays the English translation of error messages and fields meant for use on Meta (such as click here to go to voting server). However, it does not seem to display in other languages. Since these fields are also not rendering wikicode (related?), it is not possible to utilize templates to get around this problem.
Example from 2015 elections on a page with Spanish set as the language: