user: Question: How many people were elected in 1929
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Louisiana 2', 'James Zacharie Spearing', 'Democratic', 1924.0, 'Lost renomination Democratic hold', 'Paul H. Maloney (D) 97.2% Henry J. Veith (R) 2.8%']
SQL:

assistant: SELECT COUNT("Candidates") FROM "Table" WHERE "First elected" = 1929.0;