A sex scandal involving Mark Lamb, a candidate in Arizona's CD 6 Republican House primary, is testing the strength of a Trump endorsement in a deeply religious part of the state. Lamb, who is endorsed by former President Trump, faces challenges from other Republicans, including former astronaut Blake Masters. The scandal, which emerged recently, centers on allegations of inappropriate conduct.

It remains to be seen whether these accusations will sway Republican voters who are generally loyal to Trump and his chosen candidates. The race is seen as a barometer for the influence of Trump's backing within the party, especially in conservative districts. The outcome could signal whether personal conduct allegations can override a presidential endorsement in a primary election.

The district is considered a safe Republican seat, making the primary of significant interest to the party's future direction.