GOP presidential hopeful Herman Cain appeared on CNN's Piers Morgan Tonight last night talking up his presidential run. In an already up-and-down primary season, Cain has made his way into the top tier of GOP candidates in recent weeks, according to recent national polls.

Host Morgan asked Cain his stance on LGBT issues among a wide array of topics:

“I happen to think that it is a choice,” Cain stated. “You show me evidence, other than opinion, and you might cause me to reconsider that.”

Morgan has made a habit of asking influential conservative guests their positions on homosexuality. Earlier this year, the host pressed former Delaware senate candidate Christine O'Donnell on the issue, which eventually saw her walk out of the interview. O'Donnell was promoting her book “Troublemaker.”

Cain has made controversial remarks during his time on the campaign trail. In March, Cain said during an interview with Think Progress he would not appoint a Muslim to any position in his administration.

“There is this creeping attempt, there is this attempt to gradually ease Sharia law and the Muslim faith into our government,” Cain said at the time.

Cain has, however, stated that openly-gay staffers would be welcome in his administration.