McConnell introduces that Tax Hike Prevention Act of 2010.

Primary season was anti-incumbent or anti-Obama or anti-establishment or all of the above: “By historical standards, not that many incumbents lost in the primaries. Four House members, three senators and one governor have been defeated, but only the number of senators’ losses rises to historic levels. But, Cook notes, more incumbents than usual have been threatened this year. By his calculations, more House incumbents have won by narrower margins than in the recent past.”