2012 is the election year for the whole world,in which Obama,historically elected with a promise of change during global financial crisis,will face enormous reelection challenges and another round of reshuffle in U.S.politics will come.Slow economic recovery,social polarization,public protest,and decline in world leadership all pose serious and big challenges on Obama's road for reelection,while effectively enhancing economic recovery and employment rate remains the key for issue.Moreover,hopeful Republican presidential candidacy and voters structural changes after 2010 census will also bring uncertainties to the elections.Since elections are elevated to the most important place in U.S.politics in 2012,all domestic and foreign policy issues will be labeled with various election tags.There is a negative tendency for U.S.China policy being irrationally used as an instrument in elections.Regarding election circumstances in the first half year of 2012,Obama is more likely to get reelected with incumbent advantages,while both chambers of Congress are likely to fall into the Republican majority due to normal backswing of partisan distribution and"tea party"influence.If this prediction comes true,U.S.will have a split government with lots of party struggles in next two years.U.S.domestic and foreign policy including U.S.-China relations will confront internal party frictions and tie-downs.How to reduce the additional cost of elections on U.S.-China relations with effectively strengthening institutionalized bilateral exchanges and communications becomes pressing and unavoidable issues for both countries. <<