Professors Eleanor MacDonald (left) and Virginia Walker.

Supporters of professors Eleanor MacDonald and Virginia Walker will have one last chance to vote for them in this year’s TVO Best Lecturer competition. Their lectures aired on March 7 and March 21 respectively, but the final voting period begins this week. Viewers can vote from April 6 through April 11.

Lectures will be posted in their entirety at www.tvo.org/bigideas on April 6. A special edition featuring five-minute excerpts from each of the lecturers will air April 10 and 11 at 5 pm on TVO.

You can vote by visiting www.tvo.org/bigideas or calling 1-877-792-VOTE (8683). The winner will be announced April 17 on TVO’s Big Ideas.