Step 1: Determine the vote share for each candidate.
Assuming all votes went to one of the two candidates:
Losing candidate's share = 30% of total votes.
Winning candidate's share = 100% - 30% = 70% of total votes.
Step 2: Calculate the difference in vote share (the margin of victory).
Margin = Winning % - Losing % = 70% - 30% = 40%.
Step 3: Equate the margin percentage to the actual vote difference.
We are given that the margin of victory is 15,000 votes.
Therefore, 40% of the total votes corresponds to 15,000.
Step 4: Calculate the number of votes for the winning candidate.
We need to find the value of 70% of the total votes.
We can set up a proportion:
If 40% = 15,000 votes,
Then 1% = \( \frac{15,000}{40} = 375 \) votes.
So, 70% = \( 70 \times 375 = 26,250 \) votes.
The winning candidate received 26,250 votes.