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The Boston Globe

Metro

Democratic contenders to air first US Senate ads

Lynch focuses on blue-collar roots

US Representatives Edward J. Markey and Stephen F. Lynch will launch the first television ads of the Massachusetts Senate race Tuesday, the start of what is expected to be a cascade of commercials as the candidates scramble to introduce themselves to voters before the April 30 primary.

Lynch’s ad, which shows him in jeans and a windbreaker and describes his childhood in public housing in South Boston and his 18 years as an ironworker, is intended to draw a subtle contrast with ­Markey, who has served in Congress for 36 years. Markey’s campaign would not disclose the contents of his ad.

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