A bill to expand offshore drilling for oil failed to advance in the U.S. Senate yesterday. Iowa’s Chuck Grassley was among 42 Republicans who voted to proceed with considering the Offshore Production and Safety Act of 2011 (roll call). Five Republicans joined every Democrat present, including Tom Harkin, in voting against the motion, which needed 60 votes to pass.

This bill was written as the Republican way to address high gasoline prices, in contrast with Democratic efforts to repeal oil company tax breaks. Although oil market experts agree that more drilling in the outer shelf won’t affect prices at the pump, I am surprised that no Senate Democrats backed yesterday’s motion to proceed. When the House of Representatives approved a different offshore drilling bill two weeks ago, a large chunk of the Democratic caucus (including Iowa’s Leonard Boswell) voted with Republicans.

In other Senate news, Grassley hasn’t announced how he will vote on House Budget Committee Chair Paul Ryan’s budget: “[Grassley] said the burden is on Senate Democrats to explain why they haven’t introduced their own alternative budget.” I would be shocked if Grassley voted against Ryan’s plan. Senate Minority Leader Mitch McConnell isn’t whipping his colleagues to vote for the legislation, probably because Democrats plan to make proposed Medicare reforms the centerpiece of the 2012 election campaign. But Grassley doesn’t have to worry about being re-elected.