Complex sentence: In April 2006, Schlesinger announced his intention to run for the U.S. Senate seat currently held by Joe Lieberman, with a pledge to spend $500,000 of his personal funds on the campaign.
Split into simpler sentences: In April 2006, Schlesinger announced his intention to run for the U.S. Senate seat currently held by Joe Lieberman. Schlesinger pledged to spend $500,000 of his personal funds on the campaign.