Ad campaign woos gun owners
Montana Dem has taken $1.2 million from corporate-backed PACs
Astroturf hunting group 'resurrected to try and generate political cover for liberal candidates'
GOP suit challenges Dem's executive orders that affect his Senate bid
Steve Bullock has backed onerous gun-control proposals
The Montana governor previously took an 'equal pay pledge'
Revelation comes after top Bullock aide was fired for inappropriate social media posts