Sen. Ted Cruz of Texas is planning to campaign across the country in support of Republican colleagues running for election in the midterms-and with an eye on a potential 2024 presidential run.

The month-long, 17-state tour begins Oct. 1 and includes stops in Iowa, Nebraska and New Hampshire-three states with early presidential candidate nominating processes.

Cruz plans campaign stops in support of senatorial candidates Blake Masters in Arizona, Georgia's Herschel Walker and Ohio's J.D. Vance.

Cruz, a failed 2016 presidential candidate, has not ruled out a 2024 run. He has repeatedly said his decision depends on former President Trump's intentions in 2024.

"The race in '24 will very much hinge on whatever President Trump decides to do," he told NBC News in January.

According to a New York Times/Siena College poll in July, nearly half of Republicans said they would not vote for Trump in a 2024 presidential primary.

In 2018, Cruz narrowly beat Democrat Beto O'Rourke to win a second senate term.

The political action committee Truth and Courage is hosting the tour. The super PAC raised $1.9 million in March, according to a Federal Election Committee filing.