President Obama congratulated British Prime Minister David Cameron Friday for his easier-than-expected re-election victory, calling it an "impressive" showing by his staunch ally.

"I congratulate Prime Minister Cameron on his impressive electoral victory. The special and essential relationship between the United States and the United Kingdom is rooted in deep and abiding shared interests and values," Obama said. "I have enjoyed working closely with Prime Minister Cameron on a range of shared interests these last several years, and I look forward to continuing to strengthen the bonds between our countries as we work together on behalf of global peace, security and prosperity."

Cameron cruised to re-election when his Conservative Party secured an overall majority in Parliament.

Pundits had expected a much tighter race.

Labour Party leader Ed Miliband announced his resignation earlier Friday after the disappointing performance.

Cameron now has the luxury of setting his agenda without stiff resistance in the House of Commons.

Obama and Cameron have an incredibly close relationship, with the prime minister jokingly referring to the president as his "bro."