As Tea Party politicians prepare to take their seats when the 112th Congress convenes this week, they are already taking issue with Republicans for failing to hold the line against the flurry of legislation enacted in the waning weeks of Democratic control of the House of Representatives and for not giving some candidates backed by Tea Party groups powerful leadership positions.

Just a month ago, Tea Party leaders were celebrating their movement’s victories in the midterm elections. But as Congress wrapped up an unusually productive lame-duck session last month, those same Tea Party leaders were lamenting that Washington behaved as if it barely noticed that American voters had repudiated the political establishment.

In their final days controlling the House, Democrats succeeded in passing legislation that Tea Party leaders opposed, including a bill to cover the cost of medical care for rescue workers at the site of the World Trade Center attacks, an arms-control treaty with Russia, a food safety bill and a repeal of the ban on gay men and lesbians serving openly in the military.

“Do I think that they’ve recognized what happened on Election Day? I would say decisively no,” said Mark Meckler, a co-founder of Tea Party Patriots, which sent its members an alert last month urging them to call their representatives to urge them to “stop now and go home!!”