"showboater"
(noun) a person who performs in an ostentatiously sensational manner calculated to draw attention
definitions from dictionary.com
From the Des Moines Register, March 14, 2014
"U.S. Rep. Steve King seems to dedicate more energy to making headlines than making a difference in Washington. Most Iowans can easily remember at least one of the Kiron Republican’s outrageous remarks. That’s because, well, there are so many to choose from ..."At any rate, Iowans embarrassed by King’s antics are out of ideas for how to deal with him. They’ve tried ignoring him, but he doesn’t go away. They’ve tried admonishing him, but he seems to relish in the additional attention."


