Hillary Clinton said she would not commit to signing an agreement not to take money from fossil fuel companies while fielding questions in a town hall in Iowa on Wednesday.

When asked if she had ever received money from the fossil fuel industry, the candidate responded, "Well, I don't know that I ever have, I'm not exactly one of their favorites."

"So individuals who may have some connection to whatever industry, I'm not going to do a litmus test on them, I don't think there are a lot that support me," Clinton added, speaking of her donors tied to the fossil fuel industry. "The [fossil fuel] companies don't support me because they know I'm going to be very adamant about moving us towards clean renewable energy."

The Democratic front-runner has called climate change one of "the most important issues of our time" and has praised President Obama's Paris climate deal.

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