Representative Madison Cawthorn, a North Carolina Republican, appears to be losing substantial support from GOP voters while still maintaining a lead over his chief primary challenger, new polling shows. Cawthorn, who has been endorsed by former President Donald Trump, faces opposition from Republican leaders in his state, including North Carolina's GOP Senator Thom Tillis. The Republican lawmaker has endured numerous scandals in recent weeks, with the number ramping up rapidly as opponents could be spreading dirt on the Trump-backed freshman incumbent in an effort to oust him from office. While the scandals appear to have had an impact, according to...