Mayors of cities that thrive on the auto sector have banded together seeking answers during the provincial election campaign.

They've written an open letter to the leaders of the three main parties.

They want to know what each of them is going to do to sustain the auto industry, if elected.

Rob Burton is the mayor of Oakville. He's the one who sent the open letter on behalf of all the automotive cities.

"We've had a good response from the Liberals, but no response yet from the others," he said.

Burton told CBC Windsor Morning host Tony Doucette that he wanted to remain neutral in the upcoming provincial election, but that he wanted to raise awareness about investment in the automotive industry.

"I don't believe investing in a corporation you're going to get money back from can be construed as welfare," Burton said. "All we mayors can do is to educate the confused and try to save our economy."

While the Liberal platform supports government investment in corporations, the Progressive Conservatives have said they support lowering the cost of energy to support corporations instead. While they also support the auto industry, the NDP have not yet made clear how they intend to keep corporations in Ontario.

The auto mayors will be holding a national summit on the future of the auto manufacturing sector in Canada at the Ford headquarters in Oakville.

While Windsor mayor Eddie Francis is among the group, he told CBC News he may not be able to attend the meeting.

Francis used to head the group.

"At that point in time, it was a very active and aggressive group as it relates to investment," he said. "The Oakville mayor is doing the same with this group. If I'm not able to attend, then I'll always send a representative."