Oil and gas workers have been giving presidential contenders Donald Trump and Hillary Clinton similar amounts in campaign contributions, which industry lobbyists chalk up to increasing ambivalence over both nominees and growing skepticism about Trump.

Employees in the oil and natural gas sector have given Democratic nominee Clinton $114,141 since the beginning of July in individual contributions of $200 or more, according to new campaign data reviewed by Reuters. Republican nominee Trump received $99,302, according to the review.