Ukip was set to win its first MP on Thursday of this week, when a by-election will take place in Clacton, Essex.
Mainstream politicians will line up to give interviews expressing their horror at the growth of the hard right party.
But their anti-immigrant racism has fed the rise of Ukip.
The Tories and Labour are engaged in a constant battle to see which party can have the nastiest immigration policies. So David Cameron pledged at the Tory party conference this year to cut net migration to tens of thousands.
Meanwhile over at Labour’s conference, shadow chancellor Ed Balls was apologising for Labour’s “mistakes” on immigration.
“We should have had tougher rules on immigration from Eastern Europe,” he declared, before going on to cast migrants as scroungers.
Tory and Labour politicians are united in treating immigrants as a problem. They say they must “tackle” immigration to meet ordinary people’s “concerns”—and to stop more people turning to Ukip.
But in reality their policies and rhetoric are creating these “concerns” and legitimising the racism that boosts Ukip in the first place.
A victory for Ukip this week will mark a dangerous shift in mainstream politics even further to the right.
We need to take on the racists of Ukip—but we also need to organise against the mainstream policies that are driving them.