Yet another Connecticut Republican has launched a television advertisement for a primary that’s 10 months away — a move that underscores how competitive and expensive the contest to oust Sen. Christopher J. Dodd has become.

Former Ambassador to Ireland Tom Foley hit the airwaves Tuesday with his second ad.

He follows fellow Republican and former World Wrestling Entertainment CEO Linda McMahon, who went up on the airwaves in September and again last week for just one day, while President Obama was in Connecticut to raise money for Dodd.