It looks like Indianapolis Mayor Bart Peterson will have a Republican challenger after all. Local businessman Bob Parker is expected to file paperwork today and formally announce tomorrow that he is running for Mayor of Indianapolis. Parker is a millionaire. And while GOP sources aren’t saying what Parker will spend on the Mayor’s race, they say he can be financially competitive with Peterson who has at least $2 million in his campaign account. Parker owns Parker Machinery, a company that works with factory equipment. Peterson is expected to make an official announcement today that he is seeking a third term as Mayor.