Shouldn't the results have been fairly predictable? Right-wing turnout was low and thus with 6 candidates for 5 seats (write-ins not included) it was likely that the more radical of the Federalist candidates failed to get in and all the others did.
It was close though; had JCL been more moderate I think they would have gotten that second seat.
The problem for the Federalists is what you outlined, "Right wing turnout was low". This is the biggest problem for the current Federalist Party, it's unfortunate that Yankee has to run his party by himself, it must be extremely difficult, and if they had an active core, they could have easily gotten two seats.
GriffGraph® showed that the Federalist Party had a turnout of 51%, this is on a fantasy election game on an American-styled political website, that number should be closer to 80%. Labor did fine, 75% of their members voted, The People's Party had a phenomenal turnout, over 95%, and those are the reasons TPP and Labor won two seats each. TPP has very active, high profile people, Labor has the Griffin turnout machine, and the reason the left (if we had to characterize TPP it would be more towards the left of the political spectrum) has seven seats in the Atlasian senate, and it's because of the huge obstacles of inactivity and the nobody stepping up in the Federalist Party.