The thing is that Israel didn't need any extreme leaders to deal with its military situation. Pretty much everyone who wasn't MaKI was very militaristic in Israeli politics in those days, you didn't need someone stronger to deal with strong enemies, because the socialists were already very eager on doing that, despite being socialists. Really, the entire cultural, political and military elite of Israel in the 50's was composed of socialists and kibbutznikim who not only founded Israel, but ruled it and did that pretty well (if your only criteria for ruling is 'survival', of course). They got the job done, which is why there wasn't really any need for radical changes, which mean that any fascist or far-right party wouldn't rise to great proportions.