Translation of Generalisierung

Last year, many parties did not receive votes anymore and had to go to the opposition. The entire area is governed today by leftist parties and the center block is weakenng constantly during the last year.
If that gets out of control (riots or support for radicals), there may flourish a steady ground on which the mentioned could reoccur. Then after a while this turns to be nationalism on a larger scale.
I called the Hilton hotel in Cuba and asked them whether it was worth coming or if they suggest to postpone the arrival. Their response was clear: Don't come unless you really have too.