The National Football League’s political action committee—Gridiron PAC—has weighed in on the hotly contested U.S. Senate election in Nevada that pits conservative Republican challenger Sharron Angle against Senate Democratic Leader Harry Reid. The PAC has given $10,000 to Reid—the maximum it can give in a single election cycle—and no money to Angle, according to Federal Election Commission data compiled by OpenSecrets.org. The NFL’s PAC also contributed to other incumbent Democratic senators facing viable challengers this year, giving $5,000 to Blanche Lincoln of Arkansas; $5,000 to Russ Feingold of Wisconsin; $5,000 to Barbara Boxer of California; $5,000 to Michael Bennet of...