After more than a decade of amassing power as Turkey’s leader, Mr. Erdogan could be on the verge of realizing his dream of changing the Constitution to make the president, rather than the prime minister, the leading political authority. His party, known as A.K.P., would have to win 330 seats in Parliament on June 7 — a three-fifths majority — to take a proposed constitutional change to a referendum.

The party won only 326 seats in the last election in 2011, and on Friday Reuters reported that the most recent poll by the research firm Konda suggests that support for A.K.P. has declined.

Source: http://www.nytimes.com/2015/05/23/opinion/dark-clouds-over-turkey.html