Call it the Secret Service popularity test. Romney’s presidential campaign will reportedly be assigned a Secret Service security detail starting Thursday because of increased turnout at campaign events as the primary season continues. The decision was not made due to a threat directed at the Romney campaign, which has brought its own private security detail along on the trail, sources said. The campaign said it was first approached by the Secret Service after the New Hampshire primary. Though former candidate Herman Cain received a detail in November, no Republican candidate currently running has Secret Service protection. Unlike Cain, Romney reportedly did not request the extra protection.