Donald Trump has successfully blurred the lines between Republicans and Democrats by stealing their playbooks on issues such ...

Ideologies among Republicans ... there has been little change in the overall landscape. Over the past few years, the largest shifts have been intraparty — voters within the Democratic Party ...

Ideologies among Republicans and Democrats in the U.S. are at the most extreme level in decades, according to a survey published Thursday. The Gallup poll found that political party identifications ...