Conservative Democrat
After 1980, the Republicans became a mostly right-wing conservative party, with conservative leaders such as Newt Gingrich, Trent Lott, and Tom DeLay, while the Democrats, while keeping their core liberal bases intact with such Senators as Ted Kennedy, Christopher Dodd, and Paul Sarbanes, grew a substantial moderate/centrist wing, the New Democrats, in the 1990s in place of their old conservative wing, with leaders such as Bill Clinton, Al Gore, and Evan Bayh. In the 2010 midterm elections, many conservative Democrats lost their seats to the Republicans.
Open–closed political spectrum
Opposition to immigration is one of the starkest divides between open and closed parties. The closed position supports restrictions on migration, and prefers that immigrants integrate into the national culture. By contrast, the open position takes a more liberal stance on migration, and tolerates or even celebrates multiculturalism. Both left-wing and right-wing parties can be closed on the topic of immigration: the conservative Polish Law and Justice accuses immigrants of undermining Polish values and bringing in terrorists, while the socialist German Left Party considers immigrants a drain on the welfare state. Conversely, in the United Kingdom for example the Adam Smith Institute (a neoliberal right-wing organisation) and Vince Cable (a left-wing social democrat and former business secretary) stand together as some of the strongest defenders of immigration.