Voters vote the way they do for a variety of reasons. They vote for a party such as AD which has been consistent and honest regarding a number of issues such as its pro-EU stance, need for a culture change, environmental and economical improvements, civil rights and integrity in public dealings. If another party has not been consistent or credible about these issue it is natural that voters will not be inclined to vote for it. After all votes have to be earned and no party is automatically entitled to votes regardless of its performance in the 5 years between elections.
Watch just but one example: