WASHINGTON (AP) — Millions of veterans could soon become casualties of the partial government shutdown.

Veterans Affairs Secretary Eric Shinseki says about 3.8 million veterans will not receive disability compensation and more than half a million vets or surviving spouses won't get pensions next month if the impasse continues into late October.

Shinseki is to testify today to the House Committee on Veterans Affairs.

In a related story, a new poll suggests that Americans are mostly holding Republicans responsible for the partial government shutdown.

Sixty-three percent of those who answered The Associated Press-GfK survey say it's the GOP's fault, and half say President Barack Obama and the Democrats are to blame.

But most now disapprove of the way Obama is handling his job.