The Left's advantage has always been overblown, I've thought. Thing is, there has generally been a massive Centrist advantage in Atlasia (though not as much in recent months). As you implied, the Centrist are actually center-left. Because of that, in a straight up Right v. Left race, they tend to support the Left-winger.
That combined with the Left's general numerical advantage has meant that it's been harder for the Right to really succeed. In the RPP's time, we've often had to go into races relying on only our own voter strength to win. Unsurprisingly, we've frequently lost those kinds of races. Generally, the RPP has more success when it can get other people to support its candidates (Inks vs. afleitch, Smid vs. Eraserhead).
This is after all (I think) only the second Senate in Atlasia's history where the Right has come to make up half of the Senate. Compare that to all the times of Left/Centrist domination & it's easy to see that the Right's current strength is an anomaly in Atlasia.
I was thinking about posting something similar to this before coming across this post. I knew going into this election what the odds were given my own leanings compared to the rest of Atlasia.
Anyway congratulations to Franzl and the best of luck to Marokai in his future endeavors.