Washington (CNN) – Minnesota Rep. Michele Bachmann has yet to formally endorse Mitt Romney's presidential bid, but she said Thursday that it's only a matter of time.
"I haven't come out with an endorsement, but I have said that I want my voice to be a voice of unity and that's my goal," Bachmann said during an afternoon appearance on Mike Huckabee's radio show. "It appears that our nominee is Mitt Romney and I will get behind that nominee."
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For several months last year during her presidential bid, Bachmann was the standard-bearer for the grassroots wing of the Republican Party that was skeptical of Romney and his establishment leanings, if not completely opposed.
But Bachmann said the choice between Romney and President Barack Obama is a no-brainer for conservatives.
"I will pull in and help to unify our party," Bachmann said. "This is it. We have got to come together. Because this is the year when we make Barack Obama a one-term president."
Bachmann expressed confidence that conservatives, including tea party activists and Evangelical Christians, will have an ally in the Oval Office if Romney wins in November.
"We will see an open ear from Mitt Romney," Bachmann said. "So far, he has proved to be a person who listens. That's what we need, a nominee who listens."
Bachmann will appear on CNN's "The Situation Room" Thursday at 4 p.m. ET.