【Midterm elections】这个问题，要首先必须了解美国的国会选举。国会选举一般涉及的是一个选区的具体利益和所关心的问题，而不是全国性问题。所谓的"中期选举"尤其是这样。中期选举是指在四年一次的总统大选之间进行的选举，因此没有在总统大选中必然出现的全国性议题。这个选举是选美国国会会员.州内议员和一些州长，但不选总统。Midterm elections are elections in the United States in which members of Congress, state legislatures, and some state governors are elected, but not the president.On the Tuesday following the first Monday in November of every even-numbered year, elections are held for all 435 members of the United States House of Representatives and 33 or 34 of the 100 members of the United States Senate. However, Presidential elections occur only every four years. Those elections for Congress that do not coincide with Presidential races are called midterm elections, because they occur about midway through a Presidential term.Thirty-four of the 50 U.S. states elect their governors to four-year terms during midterm elections, while Vermont and New Hampshire elect governors to two-year terms in midterm and presidential elections. Thus, 36 governors are elected during midterm elections. States also elect officers to their state legislatures and county offices every two years, occurring with both mid-terms and presidential years.The next midterm elections for the House, Senate, and governorships are scheduled for November 2, 2010.