(JTA) – David Brog has overseen pro-Israel organizations with significant Republican backing for more than two decades, but his own attempt to make inroads for himself as a GOP candidate fell short Tuesday in Nevada.

Brog lost his Republican Congressional primary race in the state’s 1st district to former Army colonel Mark Robertson, in a spirited eight-way race to represent the GOP in what’s likely to be a competitive general election for the recently redrawn Las Vegas-area district. Brog finished with just over 17 percent of the vote, a distant second to Robertson’s commanding 30...