He seeks a rare third term on the back of issues such as growth, welfare and Hindu nationalism
In a media statement on Saturday, the party claimed the people of Bangladesh endorsed the strike called by several Islamist groups.
Siddique on Sept 28 told a New York programme that he was averse to Hajj, Tabligh and Jamaat.
His anti-Hajj remark kicked off a wave of protests on the social media with many calling for his arrest and prosecution.
He was dropped from the Cabinet and the ruling Awami League, which initially sacked him from its policymaking Presidium, subsequently cancelled his party membership.
A group of Islamist organisations demanded his arrest by Oct 22. On Wednesday, they called for Sunday's strike as their deadline lapsed.