Former Texas Gov. Rick PerryRick PerryTop National Security Council aide moved to Energy Department role Overnight Energy: Green groups to sue over Trump rollback of Obama water rules | GOP climate plan faces pushback from right | Bezos launches B climate initiative Rick Perry to rejoin dental insurance company as chief strategy officer MORE on Monday said he was forced to end his 2016 Republican White House campaign because of lingering felony charges and the lack of a national debate spotlight.

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"We knew early on that there were two things that we had to take care of," Perry said during an appearance on Fox News's "Hannity."

Perry listed his indictment last year involving a Democratic district attorney charging him with abuse of power as having "a real corrosive effect on our ability to raise money."

The two-time White House candidate also pointed to narrowly missing the prime-time stage at the first GOP debate last month, which was capped at 10 candidates based on polling.

"When those two things didn't happen, it had a very negative impact on our fundraising through the summer," Perry admitted.

He became the first presidential candidate to drop out when he announced Friday he was suspending his campaign, which had run out of money and relied largely on volunteers.

Online interest in him spiked after he dropped out.