Indiana Republican congressional candidate Luke Messer unveiled his first campaign ad on Monday.The 30-second spot calls the former state representative a proven conservative and promises to continue in the tradition of Governor Mitch Daniels and incumbent Congressman Mike Pence, who is stepping down to run for governor this year. Speaking to a crowd of voters, Messer promises to cut spending, balance the budget, put an end to the bailouts and repeal President Obama's healthcare law.Check it out:In the May 8 primary, Messer is running in a crowded 8-person race for the GOP nomination. Thus far, Messer's candidacy has been endorsed by the Indiana Chamber of Commerce and the Indiana Right to Life PAC.