By all accounts, U.S. representative Colin Allred is the underdog in this year’s U.S. Senate race. Texas, after all, hasn’t elected a Democrat to statewide office in nearly three decades. But Allred, who was born and raised in Dallas by a single mother and played football at Baylor University and in the NFL, says his “uniquely Texan” story will resonate with voters. He’s also playing up his willingness to go up against the Democratic establishment—as he did in January, when he joined congressional Republicans and a handful of Democrats to support a resolution condemning President Biden’s handling of the nation’s southern border. But what’s really boosting his campaign, he says, is the sentiment that he repeatedly hears from voters: they’re ready to move on from…