Florida: Murphy leads Grayson. The Mason-Dixon poll taken in mid-April shows that US Rep. Patrick Murphy, the only announced Democratic candidate, is favored by 23% of the state’s Democrats, to only 14% for US Rep. Alan Grayson, a liberal firebrand who is considering the race; 63% are undecided. Neither has much name ID: Murphy is unknown to 63% of respondents, Grayson to 54% ……. North Carolina: Walker to speak at GOP convention. Wisconsin Gov. Scott Walker (R), who gets high marks in opinion polls of Republican voters, will be the featured speaker this year at the Tar Heel State’s Republican convention. The conclave will be held at the Raleigh Convention Center on June 5-7 ……. Georgia: Jill Biden to address HRC. Dr. Jill Biden, wife of Vice President Joe Biden, will keynote the annual Gala Dinner of the Human Rights Campaign, the nation’s largest group for the Lesbian, Gay, Bisexual and Transgender (LGBT) community, in Atlanta on May 2. LGBT voters are a major source of support, financial and otherwise, for Democratic presidential candidates …….