<prompt> Ngwala tšwetšopele ya serapa se - Kovalyov e bile mosekaseki yo a bolelago phatlalatša wa ditshekamelo tša pušo ya bogateledi mebušong ya Boris Yeltsin le Vladimir Putin. Ka 1996, o ile a tlogela go ba hlogo ya khomišene ya ditshwanelo tša batho ya mopresidente Yeltsin, ka morago ga go gatiša lengwalo le le bulegilego go Yeltsin, moo Kovalyov a ilego a latofatša mopresidente ka go tlogela melao ya motheo ya temokrasi. Ka 2002, o ile a rulaganya komiti ya setšhaba go nyakišiša ka go thuthupa ga diphapoši tša Moscow ka 1999  <response>: Khomišene ya Kovalyov, yeo e bego e golofetše ka mo go feletšego ka morago ga ge yo mongwe wa ditho tša yona, Sergei Yushenkov, a bolailwe, setho se sengwe, Yuri Shchekochikhin, seo go thwego se tšhetšwe mpholo ka thallium, le moeletši wa yona wa molao le monyakišiši, Mikhail Trepashkin, ba golegilwe. 