Tommy Thompson releases first TV ad as poll shows him strong

Former Wisconsin Gov. Tommy Thompson (R) released his first television ad in the race for the Senate seat held by Democrat Herb Kohl, who is retiring. 

The spot attacks President Obama. 

A new poll showed Thompson dominating his primary rivals and within 1 point of Rep. Tammy Baldwin (D-Wis.) in a general election matchup.

Read more on The Hill’s Ballot Box blog.