It’s a last gasp for conservatives who are trying to derail Donald Trump’s drive for the Republican presidential nomination.

A committee at the GOP national convention has crushed their bid to let delegates back the candidate of their choice.

The convention’s rules committee is dominated by Trump backers, as well as national and state GOP officials.

It’s appeared uncertain whether the conservatives could get enough support to force the full convention to revisit the proposal when the convention opens on Monday.

Foes say they believe the movement is essentially finished.

(AP)