Washington: US presidential hopeful Bernie Sanders is predicting victory in Texas not only in the Democratic primary but in November's general election.

The Vermont senator adopted the tone of a candidate who has already secured the nomination before thousands of cheering supporters who filled a basketball arena on the campus of the University of Houston on Sunday.

Democratic presidential candidate Senator Bernie Sanders in Austin, Texas. Credit:Austin American Statesman/AP

Referring to supporters of President Donald Trump, Sanders said, "Don't tell anybody because these folks get very agitated and nervous" before continuing, "We are going to win here".

Sanders meant during the primary's "Super Tuesday" on March 3, but also said "in November we're going to defeat Trump here."