Ha-Mizrachi was the organ of the Mizrachi movement in Poland. Its editor, Rabbi Isaac Nissenbaum (1868–1942), studied in religious seminaries (Heb. yeshivah, pl. yeshivot) in Babruysk, Volozhyn, and Vilna. Following his marriage, he settled in Minsk. He was active in the Ḥibbat Tsiyyon (Heb. ‘Love of Zion’) movement, and from 1894 served as a trusted aide to Rabbi Shmuel Mohilever (1824-1898). While hoping to eventually win over ultra-Orthodox (Heb. ḥaredi) circles to the Zionist cause, Nissenbaum also joined the esoteric national religious union ‘Netsaḥ Yiśraʾel’ (Heb. Eternity of Israel), and established ties with the poet Ḥayyim Naḥman Bialik (1873–1934).
In 1901, Nissenbaum moved to Warsaw. He visited Palestine in 1905. He was one of the heads of the Mizrachi movement, which was founded in 1902, and served as its representative in Zionist institutions, such as the Jewish National Fund (Keren Kayemet LeYisrael). He served as president of the Mizrachi in Poland during his final years and was thoroughly familiar with every aspect of the movement.
An ideological article by Nissenbaum, or by one of his colleagues, appeared in the first pages of each issue of Ha-Mizrachi for the entire duration of the publication of this weekly. This editorial was, in fact, the principle purpose of the organ: clarification of ideological and practical questions that occupied the Mizrachi movement. First and foremost among these were the matter of immigration to and settlement of the Land of Israel, relations and disagreements with the Zionist organisation and its institutions, attitude towards both secular and ḥaredi movements in the Jewish world, as well as internal debates on religious and ideological questions.
In terms of its form and content, the twelve-page weekly was very well edited. Below the headline, there appeared a ‘table of contents’, which included a list of all of the articles and their authors in a very readable format. The first issue contained articles and descriptions of the recent pogrom in Lwów, as well as columns called ‘In our world’, which included news items of interest relating to all Jews; ‘the Land of Israel’ column provided news from Palestine; ‘the Mizrachi movement’, a relatively large column, was divided into sub-paragraphs that featured reports and communications from the executive committee of the movement in Poland and from the central office of the Mizrachi organisation; a lengthy column called ‘From the country towns’ included reports on the activity of the movement in these environs.. There was also a column entitled, ‘The Mizrachi youth’, and one called ‘In Zionism’, which described activity of the Zionist movement in Poland.
Over the course of the years, these columns appeared irregularly. Some of them were cancelled and were replaced by articles and other descriptions of the lives of Jews in Poland and in Palestine. One column that later appeared was ‘In journalism’, which addressed an article or several articles regarding the activity of the movement that had appeared in the Jewish press, including in the press in Palestine. The advertisements (which included obituaries) appeared on the last page and, for most of the years of the newspaper’s duration, never spread onto other pages.
The numbering of the newspapers' issues dates from the appearance of the first issue, which was 15 Tevet 5679 (18 December 1918). Thus the first issue of every successive year appeared in Tevet. It appears that the editor of Ha-Mizrachi had no difficulty in finding writers for his paper. By 1919 (issue 3 of that year), the weekly included a future table of contents for the entire year in alphabetical order and this process repeated itself every following year (except for 1924).
Stories appeared from time to time, beginning with the second issue of the first year of the newspaper. In the same issue (no. 2), a poem also appeared, although this happened rarely.
The organ generally did not stray from the ideology of the Mizrachi movement in Poland, faithfully represented its ideological message and covered its position on matters that stood at the centre of debates of the worldwide Mizrachi movement and the Zionist movement. In this way, Ha-Mizrachi was a very effective political/partisan tool for its readers.