alt Hacker News> almost unheard of in the US for an elected politician to poll lower than 30%, it seems to be a floor
Alan Keyes apparently set the floor at 27%, which is not far below 30%
> Obama vs. Alan Keyes. ... Keyes was plainly, obviously, completely crazy. But 27% of the population of Illinois voted for him. They put party identification, personal prejudice, whatever ahead of rational judgement.
https://kfmonkey.blogspot.com/2005/10/lunch-discussions-145-...
https://en.wikipedia.org/wiki/2004_United_States_Senate_elec...
And lizardman's Constant is 4% https://en.wiktionary.org/wiki/Lizardman%27s_Constant
To drive that home, Alan Keyes got to 27% by
- running against a charismatic Obama
- being a last minute insert when Jack Ryan was caught in a sex scandal (who was already fighting an uphill battle with sharing a last name with the corrupt former governor)
- being a carpetbagger (he didn't live in Illinois at any point until running for senate)
- running as a hard-line social conservative in a state where the GOP is torn between appealing to suburban Chicago fiscal conservatives and downstate Illinois social conservatives