If the democrats/Labour/the SPD etc. (ie. the lib blob party) gets few votes they will be afraid and move right to claw back those votes.
If the lib blob party gets many votes they feel safe to do the good things they really want to do.
If the lib blob party does bad things it is evidence that they didn't get enough votes and you have to vote for them. Anything bad the lib blob does is the voters' fault.
I think the rationale is something like:
If the democrats/Labour/the SPD etc. (ie. the lib blob party) gets few votes they will be afraid and move right to claw back those votes.
If the lib blob party gets many votes they feel safe to do the good things they really want to do.
If the lib blob party does bad things it is evidence that they didn't get enough votes and you have to vote for them. Anything bad the lib blob does is the voters' fault.