Here in Australia we had an MP who said a lot of the same things as Farage, Pauline Hanson. She preyed on people's fears, and got elected to be the federal MP for MY area. I was utterly horrified because I saw through her from the start, and I was equally horrified that over half my neighbours had voted for her anti-immigration, anti-Asian stance.
I joined the Ipswich Anti-Racism Committee to fight against what she stood for, and we defeated all her attempts to get re-elected.
But one lesser known aspect of her tenure as federal MP for Oxley, was that we might as well have had no federal representative at all. The people in her office were useless, they had no idea of their duties at all. If you wanted your MP to deal with a problem she was both unwilling and incapable. She refused to learn about or understand any political issues at all. People had to go to their (Labour) Senator for any representation they needed, and the Senator's office found its work doubled almost overnight.
I don't think Farage is as thick as Hanson - but that could well make him even more dangerous.