More than two years into his presidency, Trump has not delivered on two of his biggest 2016 campaign promises: building a wall along the U.S.-Mexico border and making Mexico pay for it, and repealing the Affordable Care Act. But despite falling short, Trump’s base is sticking with him, and Republican strategists expect his supporters will remain loyal in the upcoming election.

An April Gallup poll showed an 89% overall approval rating for Trump among Republicans, and results of a Washington Post-ABC News poll published April 30 revealed that 74% of Republicans approve of Trump’s handling of immigration.