[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/04/12/art.gi.file.rangel.jpg caption ="Rep. Charles Rangel has a long history with recently announced challenger Adam Clayton Powell."]
New York (CNN) - New York state legislator Adam Clayton Powell on Monday announced his candidacy in this year's Democratic primary against 20-term U.S. Rep. Charles Rangel, who has spent the past year battling an ethics investigation.
Powell acknowledged Rangel's 40-year legacy, adding it's time for change.
"I believe I will be part of that new chapter that will be written about Northern Manhattan and the New York City political history," Powell told reporters.
Powell was referring to the alleged ethics violations that led Rangel to temporarily step down last month from his post as chairman of the House Ways and Means Committee.
That happened on the heels of an ethics investigation for failure to pay taxes on a home in the Dominican Republic, and failure to report hundreds of thousands of dollars on federal disclosure forms. The committee found that the congressman was in violation of gift rules for accepting reimbursement payments for travel to the Caribbean for conferences in 2007 and 2008.
Rangel is also accused of misusing a rent-controlled apartment for political purposes and preserving tax benefits for an oil-drilling company in exchange for donations to a project he supported at City College of New York.
On Monday, Powell charged that Rangel plans to run for re-election with the intention of stepping down early and having a say in who would proceed him - an accusation Rangel's campaign spokesman, Kevin Wardally, said is "just not true."