What The Less-Than Average Person who will say is enough

[Metaphorical]

2. Remember that 50% of any population is below average in a normal distribution for any metric

At the same time, intelligence is not necessarily an indicator of political leaning. The higher your intelligence, the more likely you tend to be a political centrist, for instance. You get a pretty even mix between economic conservatives and economic liberals at higher intelligences, but social conservatism definitely correlates strongly with lower cognitive ability. That's why you have to be careful with overly broad generalizations.