In Interactive Democracy the stupidest person in the country has the same voting power as the brightest person in the country! Is this bad?
This unfortunate individual should have the same human rights and be treated with the same decency as anyone else. If they possess a little IQ it does not mean that they don't have emotional intelligence, sound morals or unique experiences from which to draw in reaching a decision.
And, should their vote be considered somewhat random, you may think of it as the noise on the signal of the national intent. Noise that is likely balanced by a random vote in the opposite direction, leaving the winning argument to emerge, clearly.
"IQ minim" is perhaps more likely to be swayed by strong persuaders and it is the role of effective political leadership, the media savvy and eloquent, to win him/her over. There will always be a role for intelligent leadership. The danger, as in any election, is manipulation of their vote by close associates.
The ideas engine (or ePetition) provides an opportunity for good solutions to emerge, allowing society to capitalise on the intelligence of the brightest. This is an area where "IQ minim" is unlikely to shine, unless their situation sparks ideas in others.