Nevada Sen. John Ensign (R) said that legalized prostitution should remain a local issue in his state, breaking with Senate Majority Leader Harry ReidHarry ReidWarren cautions Dems against infighting Dems see surge of new candidates Dems to grind Senate to a halt over ObamaCare repeal fight MORE (D-Nev.), who has called for it to be banned. 

Reid addressed a joint session of the state legislature this week, where he said prostitution should be made illegal in all Nevada counties in order to make the state more appealing to businesses. Ensign countered that it should be a "county by county issue."

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"You know, that's a county by county issue and I think and it should be left to the counties," said Ensign after a Wednesday town hall meeting, according to KTNV-TV.

The remark is likely to raise eyebrows, considering that Ensign is in the midst of trying to rebuild his political reputation after admitting to having an affair with Cindy Hampton, a former campaign aide. Ensign faces reelection in 2012.

The senator, who used to serve in the Senate GOP conference leadership, faces an investigation from the Senate Ethics Committee into whether or not he broke rules by helping Hampton's husband Doug find lobbying work. 

But after keeping a low profile since the affair was revealed in 2009, Ensign has gotten back on the trail, holding a series of town-hall meetings with Nevadans across the state.

Brothels are quite powerful in the smaller, rural counties where prostitution is legalized.

Ensign has continued to face questions about his affair at the gatherings. He may also have to overcome a tough primary challenge in order to win reelection: GOP Rep. Dean HellerDean HellerGOP at decisive moment on Planned Parenthood Trump: ‘I cannot imagine’ GOP senators don’t back healthcare bill Bill Clinton issues warning on opioid crisis: ‘It’s going to eat us all alive’ MORE (Nev.) is thinking about challenging Ensign. 

Democrats are gearing up to take down Ensign, searching for top recruits to run against him.