To determine how many members voted in the election, we need to calculate 35% of 80 members.
First, we convert the percentage to a decimal:
\[ 35% = 0.35 \]
Next, we multiply the total number of members by this decimal:
\[ \text{Number of members who voted} = 0.35 \times 80 \]
Calculating that gives:
\[ 0.35 \times 80 = 28 \]
So, the number of members who voted in the election is 28.