Lord McAlpine was a "man of integrity" who made a huge contribution to public life, Conservative Party chairman Grant Shapps has said.
The former deputy Conservative Party deputy chairman died last night in Italy at the age of 71.
"Lord McAlpine made a huge contribution to public life," Mr Shapps said.
"He was a man of integrity who had a successful career in both politics and business.
"He was a towering figure during the Thatcher era who did much for the Conservative Party and our country.
"My thoughts are with his friends and family."
More top news
New research calls into question certain common, private treatments whose costs can run into the thousands.
1,209 people were found guilty of 'trolling' offences in 2014 - and 155 have been jailed.
Critics are ambivalent to this year's slate of winners, who were picked in part by American directors Joel and Ethan Coen.