Political spending on the Oregon governor's race nearly doubled from four years ago. The state is one of just five in the nation without campaign contribution limits.

Oregon’s three leading candidates for governor all spent at least $4 million over the summer and devoted most of their summer spending to TV advertising, according to an Oregonian/OregonLive analysis.

Oregonians should take back control of their elections by limiting campaign contributions and ensuring that candidates focus on the needs of the broader community - not just wealthy donors - write Khanh Le of Unite Oregon and Kate TItus of Common Cause Oregon.

The final days before an election are often when some of the most interesting political spending takes place and in the Democratic and Republican primaries for Oregon governor, candidates are going for broke as the May 17 election looms.