1.   Bowness could be the most intriguing possibility among the young candidates that could be speculated upon.

2.   But it was a question that was being widely speculated upon throughout Washington and beyond.

3.   Every investment move was tracked or speculated upon endlessly.

4.   Given the mutual affection between Hollywood show business and Clinton, such scenarios have been widely speculated upon in Washington.

5.   Possible motives began to be speculated upon.

6.   Bildt is a former Swedish prime minister and his return to politics has been widely speculated upon.