Are the white shading representing seats where there was no candidate standings for an party or got less than x% of votes?
Sinn Féin stood everywhere.
Either an official Unionist or a "Labour Unionist" stood everywhere except Falls, which was an Irish Parliamentary Party/Sinn Féin only contest.
The Irish Parliamentary Party only stood in Falls and Duncairn.
Belfast Labour stood in Cromac, Pottinger, Shankill and Victoria.
In addition there were Independent Unionist candidates in Ormeau and St. Anne's, and an Independent Labour candidate in Pottinger.