Early in her political career Congresswoman Mimi Walters, a Republican from inland Orange County, California, minted her reputation as a gun-rights advocate. From 2004 to 2008, while representing the county’s southern coastal cities in the state Assembly, she twice voted against bills requiring the microstamping of bullets from automatic firearms, despite law enforcement’s support of the measure. Later, while serving in the state Senate, she said nay to background checks for ammunition buyers, to banning large-capacity conversion kits and to prohibiting people under domestic violence restraining orders from obtaining firearms.

This story is being co-published with Capital & Main[1]

Since she began representing California’s 45th Congressional District, Walters has had fewer opportunities to prove her Second Amendment bona fides; gun-related bills have rarely come up for a vote in House Speaker Paul Ryan’s Congress. But gun-rights groups continue to contribute to her campaigns. For her 2018 reelection campaign, gun groups have invested $5,150 in Walters, the third-largest contribution from gun groups to a single candidate in this cycle so far.

Before Parkland, the subject of gun rights almost never came up in Walters’ campaign statements, social media feeds or literature; it was just one part of the agreed-upon conservative platform, along with opposing abortion and beefing up the military. The issues Walters has chosen to focus on — lowering taxes, shrinking the size of federal government, reducing the deficit — have played well in historically conservative CA-45, where Republicans enjoy a nine-point registration advantage. On November 8, 2016, Walters won re-election with a 17-point margin.

The Cook Political Report has changed Congresswoman Walters’ district from solid red to “lean Republican.”

But a lot has happened since then. For starters, despite Walters’ victory, Hillary Clinton beat Donald Trump in the district by five points, a sign that at least some of Walters’

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