Israeli Basic Law is in effect the constitution of the country. A set of laws that were first laid down when the Israel proclaimed Independence.
Amendment of section 7A 1. In the Basic Law: The Knesset**, the following section shall be inserted after section 7:
“Prevention of participation of candidates’ list
7A. A candidates’ list shall not participate in elections to the Knesset if its objects or actions, expressly or by implication, include one of the following:
(1) negation of the existence of the State of Israel as the state of the Jewish people;
(2) negation of the democratic character of the State;
(3) incitement to racism.”.
So, what does this say then?
You cannot stand for election to The Knesset unless:
(1) You accept that The Knesset is working for the Jews, not only of Israel, but also for the Jews of the Diaspora, as apposed to the people of the state, whether Jewish or non-Jewish;
(2) The ‘Democratic nature’ is unique to Israel and must be preserved, or the non-Jews might become a majority.
(3) Inferred from the previous two items, you may not be a candidate if you intent to incite racism, unless it is to further the privileges of Jews.
Not an apartheid state, eh?
Also, The Knesset can dictate how long 18 years is (my emphasis):
The Right To Vote:
5. Every Israel national of or over the age of eighteen years shall have the right to vote in elections to the Knesset unless a court has deprived him of that right by virtue of any Law; the Elections Law shall determine the time at which a person shall be considered to be eighteen years of age for the purpose of the exercise of the right to vote in elections to the Knesset.