It’s crunch time in the fight over constructing the Keystone XL oil sands pipeline.

Both sides believe a decision by President Obama could come by the end of the year, making the next few months critical for lobbying and messaging efforts.

Opponents plan a burst of demonstrations and other events across the country to rally environmental pressure on Obama to reject the Alberta-to-the-Gulf-Coast pipeline.

Supporters are also campaigning, with the American Petroleum Institute (API) promoting its message that Keystone’s construction will create jobs, with rallies in more than a dozen “priority states” in the coming months, API spokeswoman Sabrina Fang told The Hill.